Home / 79,702.08-109,989.20-45,711.88

Finding the Fourth Proportional to 79,702.08, 109,989.20 and 45,711.88

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Solution

The fourth proportional to 79,702.08, 109,989.20 and 45,711.88 is: 63,082.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,702.08 : 109,989.20 = 45,711.88 : x
  2. Step 2: Convert to fraction form
    79,702.08/109,989.20 = 45,711.88/x
  3. Step 3: Cross multiply
    79,702.08x = 109,989.20 × 45,711.88
  4. Step 4: Simplify right side
    79,702.08x = 5,027,813,111.70
  5. Step 5: Solve for x
    x = 5,027,813,111.70/79,702.08
  6. Step 6: Final answer
    x = 63,082.58

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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.