Home / 7,149,008.72-9,865,631.40-3,929,744.72

Finding the Fourth Proportional to 7,149,008.72, 9,865,631.40 and 3,929,744.72

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Solution

The fourth proportional to 7,149,008.72, 9,865,631.40 and 3,929,744.72 is: 5,423,047.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149,008.72 : 9,865,631.40 = 3,929,744.72 : x
  2. Step 2: Convert to fraction form
    7,149,008.72/9,865,631.40 = 3,929,744.72/x
  3. Step 3: Cross multiply
    7,149,008.72x = 9,865,631.40 × 3,929,744.72
  4. Step 4: Simplify right side
    7,149,008.72x = 38,769,412,903,616.21
  5. Step 5: Solve for x
    x = 38,769,412,903,616.21/7,149,008.72
  6. Step 6: Final answer
    x = 5,423,047.37

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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.