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Finding the Fourth Proportional to 81,543.62, 112,529.76 and 45,244.74

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Solution

The fourth proportional to 81,543.62, 112,529.76 and 45,244.74 is: 62,437.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,543.62 : 112,529.76 = 45,244.74 : x
  2. Step 2: Convert to fraction form
    81,543.62/112,529.76 = 45,244.74/x
  3. Step 3: Cross multiply
    81,543.62x = 112,529.76 × 45,244.74
  4. Step 4: Simplify right side
    81,543.62x = 5,091,379,733.46
  5. Step 5: Solve for x
    x = 5,091,379,733.46/81,543.62
  6. Step 6: Final answer
    x = 62,437.50

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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.