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Finding the Fourth Proportional to 72,427,117.80, 108,640,676.70 and 23,912,459.40

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Solution

The fourth proportional to 72,427,117.80, 108,640,676.70 and 23,912,459.40 is: 35,868,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,427,117.80 : 108,640,676.70 = 23,912,459.40 : x
  2. Step 2: Convert to fraction form
    72,427,117.80/108,640,676.70 = 23,912,459.40/x
  3. Step 3: Cross multiply
    72,427,117.80x = 108,640,676.70 × 23,912,459.40
  4. Step 4: Simplify right side
    72,427,117.80x = 2,597,865,770,777,276
  5. Step 5: Solve for x
    x = 2,597,865,770,777,276/72,427,117.80
  6. Step 6: Final answer
    x = 35,868,689.10

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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.