Home / 72,073,311.21-108,128,395.02-20,955,330.02

Finding the Fourth Proportional to 72,073,311.21, 108,128,395.02 and 20,955,330.02

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Solution

The fourth proportional to 72,073,311.21, 108,128,395.02 and 20,955,330.02 is: 31,438,353.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,073,311.21 : 108,128,395.02 = 20,955,330.02 : x
  2. Step 2: Convert to fraction form
    72,073,311.21/108,128,395.02 = 20,955,330.02/x
  3. Step 3: Cross multiply
    72,073,311.21x = 108,128,395.02 × 20,955,330.02
  4. Step 4: Simplify right side
    72,073,311.21x = 2,265,866,202,525,928
  5. Step 5: Solve for x
    x = 2,265,866,202,525,928/72,073,311.21
  6. Step 6: Final answer
    x = 31,438,353.04

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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.