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Finding the Fourth Proportional to 63,031.60, 87,005.88 and 56,305.54

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Solution

The fourth proportional to 63,031.60, 87,005.88 and 56,305.54 is: 77,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,031.60 : 87,005.88 = 56,305.54 : x
  2. Step 2: Convert to fraction form
    63,031.60/87,005.88 = 56,305.54/x
  3. Step 3: Cross multiply
    63,031.60x = 87,005.88 × 56,305.54
  4. Step 4: Simplify right side
    63,031.60x = 4,898,913,056.58
  5. Step 5: Solve for x
    x = 4,898,913,056.58/63,031.60
  6. Step 6: Final answer
    x = 77,721.54

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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.