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Finding the Fourth Proportional to 52,474.70, 78,712.05 and 21,332.30

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Solution

The fourth proportional to 52,474.70, 78,712.05 and 21,332.30 is: 31,998.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,474.70 : 78,712.05 = 21,332.30 : x
  2. Step 2: Convert to fraction form
    52,474.70/78,712.05 = 21,332.30/x
  3. Step 3: Cross multiply
    52,474.70x = 78,712.05 × 21,332.30
  4. Step 4: Simplify right side
    52,474.70x = 1,679,109,064.22
  5. Step 5: Solve for x
    x = 1,679,109,064.22/52,474.70
  6. Step 6: Final answer
    x = 31,998.45

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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.