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Finding the Fourth Proportional to 63,518.88, 87,456.48 and 53,938.68

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Solution

The fourth proportional to 63,518.88, 87,456.48 and 53,938.68 is: 74,265.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,518.88 : 87,456.48 = 53,938.68 : x
  2. Step 2: Convert to fraction form
    63,518.88/87,456.48 = 53,938.68/x
  3. Step 3: Cross multiply
    63,518.88x = 87,456.48 × 53,938.68
  4. Step 4: Simplify right side
    63,518.88x = 4,717,287,088.65
  5. Step 5: Solve for x
    x = 4,717,287,088.65/63,518.88
  6. Step 6: Final answer
    x = 74,265.90

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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.