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Finding the Fourth Proportional to 101,470.98, 140,030.12 and 56,150.87

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Solution

The fourth proportional to 101,470.98, 140,030.12 and 56,150.87 is: 77,488.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,470.98 : 140,030.12 = 56,150.87 : x
  2. Step 2: Convert to fraction form
    101,470.98/140,030.12 = 56,150.87/x
  3. Step 3: Cross multiply
    101,470.98x = 140,030.12 × 56,150.87
  4. Step 4: Simplify right side
    101,470.98x = 7,862,813,064.20
  5. Step 5: Solve for x
    x = 7,862,813,064.20/101,470.98
  6. Step 6: Final answer
    x = 77,488.29

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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.