Home / 76,331.25-105,337.17-42,338.61

Finding the Fourth Proportional to 76,331.25, 105,337.17 and 42,338.61

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Solution

The fourth proportional to 76,331.25, 105,337.17 and 42,338.61 is: 58,427.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,331.25 : 105,337.17 = 42,338.61 : x
  2. Step 2: Convert to fraction form
    76,331.25/105,337.17 = 42,338.61/x
  3. Step 3: Cross multiply
    76,331.25x = 105,337.17 × 42,338.61
  4. Step 4: Simplify right side
    76,331.25x = 4,459,829,359.13
  5. Step 5: Solve for x
    x = 4,459,829,359.13/76,331.25
  6. Step 6: Final answer
    x = 58,427.31

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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.