Home / 72,427,143.60-108,640,715.40-66,884,410.80

Finding the Fourth Proportional to 72,427,143.60, 108,640,715.40 and 66,884,410.80

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Solution

The fourth proportional to 72,427,143.60, 108,640,715.40 and 66,884,410.80 is: 100,326,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,427,143.60 : 108,640,715.40 = 66,884,410.80 : x
  2. Step 2: Convert to fraction form
    72,427,143.60/108,640,715.40 = 66,884,410.80/x
  3. Step 3: Cross multiply
    72,427,143.60x = 108,640,715.40 × 66,884,410.80
  4. Step 4: Simplify right side
    72,427,143.60x = 7,266,370,238,419,486
  5. Step 5: Solve for x
    x = 7,266,370,238,419,486/72,427,143.60
  6. Step 6: Final answer
    x = 100,326,616.20

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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.