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Finding the Fourth Proportional to 56,886.84, 85,215.96 and 28,337.76

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Solution

The fourth proportional to 56,886.84, 85,215.96 and 28,337.76 is: 42,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,886.84 : 85,215.96 = 28,337.76 : x
  2. Step 2: Convert to fraction form
    56,886.84/85,215.96 = 28,337.76/x
  3. Step 3: Cross multiply
    56,886.84x = 85,215.96 × 28,337.76
  4. Step 4: Simplify right side
    56,886.84x = 2,414,829,422.65
  5. Step 5: Solve for x
    x = 2,414,829,422.65/56,886.84
  6. Step 6: Final answer
    x = 42,449.70

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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.