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Finding the Fourth Proportional to 90,920.41, 125,459.13 and 52,156.22

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Solution

The fourth proportional to 90,920.41, 125,459.13 and 52,156.22 is: 71,969.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,920.41 : 125,459.13 = 52,156.22 : x
  2. Step 2: Convert to fraction form
    90,920.41/125,459.13 = 52,156.22/x
  3. Step 3: Cross multiply
    90,920.41x = 125,459.13 × 52,156.22
  4. Step 4: Simplify right side
    90,920.41x = 6,543,473,965.91
  5. Step 5: Solve for x
    x = 6,543,473,965.91/90,920.41
  6. Step 6: Final answer
    x = 71,969.25

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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.