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Finding the Fourth Proportional to 91,971,950.40, 137,840,702.40 and 48,861,806.40

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Solution

The fourth proportional to 91,971,950.40, 137,840,702.40 and 48,861,806.40 is: 73,230,432.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,971,950.40 : 137,840,702.40 = 48,861,806.40 : x
  2. Step 2: Convert to fraction form
    91,971,950.40/137,840,702.40 = 48,861,806.40/x
  3. Step 3: Cross multiply
    91,971,950.40x = 137,840,702.40 × 48,861,806.40
  4. Step 4: Simplify right side
    91,971,950.40x = 6,735,145,714,708,815
  5. Step 5: Solve for x
    x = 6,735,145,714,708,815/91,971,950.40
  6. Step 6: Final answer
    x = 73,230,432.60

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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.