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Finding the Fourth Proportional to 78,901.80, 118,358.84 and 26,311.24

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Solution

The fourth proportional to 78,901.80, 118,358.84 and 26,311.24 is: 39,468.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,901.80 : 118,358.84 = 26,311.24 : x
  2. Step 2: Convert to fraction form
    78,901.80/118,358.84 = 26,311.24/x
  3. Step 3: Cross multiply
    78,901.80x = 118,358.84 × 26,311.24
  4. Step 4: Simplify right side
    78,901.80x = 3,114,167,845.36
  5. Step 5: Solve for x
    x = 3,114,167,845.36/78,901.80
  6. Step 6: Final answer
    x = 39,468.91

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1.5x scale

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.