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Finding the Fourth Proportional to 84,897,602.40, 127,346,403.60 and 54,286,600.80

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Solution

The fourth proportional to 84,897,602.40, 127,346,403.60 and 54,286,600.80 is: 81,429,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,897,602.40 : 127,346,403.60 = 54,286,600.80 : x
  2. Step 2: Convert to fraction form
    84,897,602.40/127,346,403.60 = 54,286,600.80/x
  3. Step 3: Cross multiply
    84,897,602.40x = 127,346,403.60 × 54,286,600.80
  4. Step 4: Simplify right side
    84,897,602.40x = 6,913,203,375,548,882
  5. Step 5: Solve for x
    x = 6,913,203,375,548,882/84,897,602.40
  6. Step 6: Final answer
    x = 81,429,901.20

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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.