Home / 72,060.31-99,439.05-40,231.21

Finding the Fourth Proportional to 72,060.31, 99,439.05 and 40,231.21

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Solution

The fourth proportional to 72,060.31, 99,439.05 and 40,231.21 is: 55,516.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,060.31 : 99,439.05 = 40,231.21 : x
  2. Step 2: Convert to fraction form
    72,060.31/99,439.05 = 40,231.21/x
  3. Step 3: Cross multiply
    72,060.31x = 99,439.05 × 40,231.21
  4. Step 4: Simplify right side
    72,060.31x = 4,000,553,302.75
  5. Step 5: Solve for x
    x = 4,000,553,302.75/72,060.31
  6. Step 6: Final answer
    x = 55,516.74

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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.