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Finding the Fourth Proportional to 63,686.52, 87,977.34 and 51,023.79

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Solution

The fourth proportional to 63,686.52, 87,977.34 and 51,023.79 is: 70,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,686.52 : 87,977.34 = 51,023.79 : x
  2. Step 2: Convert to fraction form
    63,686.52/87,977.34 = 51,023.79/x
  3. Step 3: Cross multiply
    63,686.52x = 87,977.34 × 51,023.79
  4. Step 4: Simplify right side
    63,686.52x = 4,488,937,320.92
  5. Step 5: Solve for x
    x = 4,488,937,320.92/63,686.52
  6. Step 6: Final answer
    x = 70,484.89

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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.