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Finding the Fourth Proportional to 55,988,670, 83,983,005 and 13,438,398

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Solution

The fourth proportional to 55,988,670, 83,983,005 and 13,438,398 is: 20,157,597

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,988,670 : 83,983,005 = 13,438,398 : x
  2. Step 2: Convert to fraction form
    55,988,670/83,983,005 = 13,438,398/x
  3. Step 3: Cross multiply
    55,988,670x = 83,983,005 × 13,438,398
  4. Step 4: Simplify right side
    55,988,670x = 1,128,597,046,425,990
  5. Step 5: Solve for x
    x = 1,128,597,046,425,990/55,988,670
  6. Step 6: Final answer
    x = 20,157,597

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.