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Finding the Fourth Proportional to 101,377.40, 139,895.16 and 56,052.66

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Solution

The fourth proportional to 101,377.40, 139,895.16 and 56,052.66 is: 77,349.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,377.40 : 139,895.16 = 56,052.66 : x
  2. Step 2: Convert to fraction form
    101,377.40/139,895.16 = 56,052.66/x
  3. Step 3: Cross multiply
    101,377.40x = 139,895.16 × 56,052.66
  4. Step 4: Simplify right side
    101,377.40x = 7,841,495,839.13
  5. Step 5: Solve for x
    x = 7,841,495,839.13/101,377.40
  6. Step 6: Final answer
    x = 77,349.55

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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.