Home / 72,146,998-99,564,132.68-39,108,344.38

Finding the Fourth Proportional to 72,146,998, 99,564,132.68 and 39,108,344.38

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Solution

The fourth proportional to 72,146,998, 99,564,132.68 and 39,108,344.38 is: 53,970,206.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,146,998 : 99,564,132.68 = 39,108,344.38 : x
  2. Step 2: Convert to fraction form
    72,146,998/99,564,132.68 = 39,108,344.38/x
  3. Step 3: Cross multiply
    72,146,998x = 99,564,132.68 × 39,108,344.38
  4. Step 4: Simplify right side
    72,146,998x = 3,893,788,388,745,453
  5. Step 5: Solve for x
    x = 3,893,788,388,745,453/72,146,998
  6. Step 6: Final answer
    x = 53,970,206.62

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1.5x scale

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.