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Finding the Fourth Proportional to 145,162.71, 217,659.32 and 56,312.40

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Solution

The fourth proportional to 145,162.71, 217,659.32 and 56,312.40 is: 84,435.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,162.71 : 217,659.32 = 56,312.40 : x
  2. Step 2: Convert to fraction form
    145,162.71/217,659.32 = 56,312.40/x
  3. Step 3: Cross multiply
    145,162.71x = 217,659.32 × 56,312.40
  4. Step 4: Simplify right side
    145,162.71x = 12,256,918,691.57
  5. Step 5: Solve for x
    x = 12,256,918,691.57/145,162.71
  6. Step 6: Final answer
    x = 84,435.73

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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.