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Finding the Fourth Proportional to 54,497.40, 81,748.80 and 28,253.40

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Solution

The fourth proportional to 54,497.40, 81,748.80 and 28,253.40 is: 42,381.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,497.40 : 81,748.80 = 28,253.40 : x
  2. Step 2: Convert to fraction form
    54,497.40/81,748.80 = 28,253.40/x
  3. Step 3: Cross multiply
    54,497.40x = 81,748.80 × 28,253.40
  4. Step 4: Simplify right side
    54,497.40x = 2,309,681,545.92
  5. Step 5: Solve for x
    x = 2,309,681,545.92/54,497.40
  6. Step 6: Final answer
    x = 42,381.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.