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Finding the Fourth Proportional to 90,459.95, 124,753.03 and 56,471.59

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Solution

The fourth proportional to 90,459.95, 124,753.03 and 56,471.59 is: 77,879.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,459.95 : 124,753.03 = 56,471.59 : x
  2. Step 2: Convert to fraction form
    90,459.95/124,753.03 = 56,471.59/x
  3. Step 3: Cross multiply
    90,459.95x = 124,753.03 × 56,471.59
  4. Step 4: Simplify right side
    90,459.95x = 7,045,001,274.44
  5. Step 5: Solve for x
    x = 7,045,001,274.44/90,459.95
  6. Step 6: Final answer
    x = 77,879.79

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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.