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Finding the Fourth Proportional to 79,031.66, 118,631.04 and 77,246.86

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Solution

The fourth proportional to 79,031.66, 118,631.04 and 77,246.86 is: 115,951.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,031.66 : 118,631.04 = 77,246.86 : x
  2. Step 2: Convert to fraction form
    79,031.66/118,631.04 = 77,246.86/x
  3. Step 3: Cross multiply
    79,031.66x = 118,631.04 × 77,246.86
  4. Step 4: Simplify right side
    79,031.66x = 9,163,875,085.93
  5. Step 5: Solve for x
    x = 9,163,875,085.93/79,031.66
  6. Step 6: Final answer
    x = 115,951.95

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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.