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Finding the Fourth Proportional to 63,478.17, 87,400.46 and 53,898.09

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Solution

The fourth proportional to 63,478.17, 87,400.46 and 53,898.09 is: 74,210.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,478.17 : 87,400.46 = 53,898.09 : x
  2. Step 2: Convert to fraction form
    63,478.17/87,400.46 = 53,898.09/x
  3. Step 3: Cross multiply
    63,478.17x = 87,400.46 × 53,898.09
  4. Step 4: Simplify right side
    63,478.17x = 4,710,717,589.63
  5. Step 5: Solve for x
    x = 4,710,717,589.63/63,478.17
  6. Step 6: Final answer
    x = 74,210.04

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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.