Home / 72,254.40-108,381.78-38,990.12

Finding the Fourth Proportional to 72,254.40, 108,381.78 and 38,990.12

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Solution

The fourth proportional to 72,254.40, 108,381.78 and 38,990.12 is: 58,485.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,254.40 : 108,381.78 = 38,990.12 : x
  2. Step 2: Convert to fraction form
    72,254.40/108,381.78 = 38,990.12/x
  3. Step 3: Cross multiply
    72,254.40x = 108,381.78 × 38,990.12
  4. Step 4: Simplify right side
    72,254.40x = 4,225,818,608.01
  5. Step 5: Solve for x
    x = 4,225,818,608.01/72,254.40
  6. Step 6: Final answer
    x = 58,485.28

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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.