Home / 72,220,142-99,663,989.13-39,180,391.13

Finding the Fourth Proportional to 72,220,142, 99,663,989.13 and 39,180,391.13

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Solution

The fourth proportional to 72,220,142, 99,663,989.13 and 39,180,391.13 is: 54,069,044.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220,142 : 99,663,989.13 = 39,180,391.13 : x
  2. Step 2: Convert to fraction form
    72,220,142/99,663,989.13 = 39,180,391.13/x
  3. Step 3: Cross multiply
    72,220,142x = 99,663,989.13 × 39,180,391.13
  4. Step 4: Simplify right side
    72,220,142x = 3,904,874,075,689,468.50
  5. Step 5: Solve for x
    x = 3,904,874,075,689,468.50/72,220,142
  6. Step 6: Final answer
    x = 54,069,044.56

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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.