Home / 65,707.16-90,689.08-42,704.78

Finding the Fourth Proportional to 65,707.16, 90,689.08 and 42,704.78

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Solution

The fourth proportional to 65,707.16, 90,689.08 and 42,704.78 is: 58,941.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,707.16 : 90,689.08 = 42,704.78 : x
  2. Step 2: Convert to fraction form
    65,707.16/90,689.08 = 42,704.78/x
  3. Step 3: Cross multiply
    65,707.16x = 90,689.08 × 42,704.78
  4. Step 4: Simplify right side
    65,707.16x = 3,872,857,209.80
  5. Step 5: Solve for x
    x = 3,872,857,209.80/65,707.16
  6. Step 6: Final answer
    x = 58,941.17

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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.