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Finding the Fourth Proportional to 48,312.70, 72,411.45 and 20,232.70

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Solution

The fourth proportional to 48,312.70, 72,411.45 and 20,232.70 is: 30,324.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,312.70 : 72,411.45 = 20,232.70 : x
  2. Step 2: Convert to fraction form
    48,312.70/72,411.45 = 20,232.70/x
  3. Step 3: Cross multiply
    48,312.70x = 72,411.45 × 20,232.70
  4. Step 4: Simplify right side
    48,312.70x = 1,465,079,144.42
  5. Step 5: Solve for x
    x = 1,465,079,144.42/48,312.70
  6. Step 6: Final answer
    x = 30,324.93

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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.