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Finding the Fourth Proportional to 90,504.59, 124,878.98 and 51,754.70

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Solution

The fourth proportional to 90,504.59, 124,878.98 and 51,754.70 is: 71,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,504.59 : 124,878.98 = 51,754.70 : x
  2. Step 2: Convert to fraction form
    90,504.59/124,878.98 = 51,754.70/x
  3. Step 3: Cross multiply
    90,504.59x = 124,878.98 × 51,754.70
  4. Step 4: Simplify right side
    90,504.59x = 6,463,073,263.04
  5. Step 5: Solve for x
    x = 6,463,073,263.04/90,504.59
  6. Step 6: Final answer
    x = 71,411.56

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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.