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Finding the Fourth Proportional to 52,658.70, 72,670.40 and 31,450.20

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Solution

The fourth proportional to 52,658.70, 72,670.40 and 31,450.20 is: 43,402.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,658.70 : 72,670.40 = 31,450.20 : x
  2. Step 2: Convert to fraction form
    52,658.70/72,670.40 = 31,450.20/x
  3. Step 3: Cross multiply
    52,658.70x = 72,670.40 × 31,450.20
  4. Step 4: Simplify right side
    52,658.70x = 2,285,498,614.08
  5. Step 5: Solve for x
    x = 2,285,498,614.08/52,658.70
  6. Step 6: Final answer
    x = 43,402.11

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1.5x scale

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.