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Finding the Fourth Proportional to 71,393.60, 106,960.80 and 58,174.40

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Solution

The fourth proportional to 71,393.60, 106,960.80 and 58,174.40 is: 87,156.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,393.60 : 106,960.80 = 58,174.40 : x
  2. Step 2: Convert to fraction form
    71,393.60/106,960.80 = 58,174.40/x
  3. Step 3: Cross multiply
    71,393.60x = 106,960.80 × 58,174.40
  4. Step 4: Simplify right side
    71,393.60x = 6,222,380,363.52
  5. Step 5: Solve for x
    x = 6,222,380,363.52/71,393.60
  6. Step 6: Final answer
    x = 87,156.00

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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.