Home / 29,231,975,894.28-40,340,156,589.42-15,865,971,779.40

Finding the Fourth Proportional to 29,231,975,894.28, 40,340,156,589.42 and 15,865,971,779.40

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Solution

The fourth proportional to 29,231,975,894.28, 40,340,156,589.42 and 15,865,971,779.40 is: 21,895,057,259.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,231,975,894.28 : 40,340,156,589.42 = 15,865,971,779.40 : x
  2. Step 2: Convert to fraction form
    29,231,975,894.28/40,340,156,589.42 = 15,865,971,779.40/x
  3. Step 3: Cross multiply
    29,231,975,894.28x = 40,340,156,589.42 × 15,865,971,779.40
  4. Step 4: Simplify right side
    29,231,975,894.28x = 640,035,786,024,314,601,472
  5. Step 5: Solve for x
    x = 640,035,786,024,314,601,472/29,231,975,894.28
  6. Step 6: Final answer
    x = 21,895,057,259.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.