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Finding the Fourth Proportional to 65,239,809.20, 97,859,713.80 and 43,740,724.40

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Solution

The fourth proportional to 65,239,809.20, 97,859,713.80 and 43,740,724.40 is: 65,611,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,239,809.20 : 97,859,713.80 = 43,740,724.40 : x
  2. Step 2: Convert to fraction form
    65,239,809.20/97,859,713.80 = 43,740,724.40/x
  3. Step 3: Cross multiply
    65,239,809.20x = 97,859,713.80 × 43,740,724.40
  4. Step 4: Simplify right side
    65,239,809.20x = 4,280,454,771,188,676.50
  5. Step 5: Solve for x
    x = 4,280,454,771,188,676.50/65,239,809.20
  6. Step 6: Final answer
    x = 65,611,086.60

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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.