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Finding the Fourth Proportional to 101,710.29, 140,363.61 and 56,385.57

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Solution

The fourth proportional to 101,710.29, 140,363.61 and 56,385.57 is: 77,813.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,710.29 : 140,363.61 = 56,385.57 : x
  2. Step 2: Convert to fraction form
    101,710.29/140,363.61 = 56,385.57/x
  3. Step 3: Cross multiply
    101,710.29x = 140,363.61 × 56,385.57
  4. Step 4: Simplify right side
    101,710.29x = 7,914,482,157.11
  5. Step 5: Solve for x
    x = 7,914,482,157.11/101,710.29
  6. Step 6: Final answer
    x = 77,813.98

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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.