Home / 72,537,680.40-108,806,520.60-21,419,617.20

Finding the Fourth Proportional to 72,537,680.40, 108,806,520.60 and 21,419,617.20

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Solution

The fourth proportional to 72,537,680.40, 108,806,520.60 and 21,419,617.20 is: 32,129,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,537,680.40 : 108,806,520.60 = 21,419,617.20 : x
  2. Step 2: Convert to fraction form
    72,537,680.40/108,806,520.60 = 21,419,617.20/x
  3. Step 3: Cross multiply
    72,537,680.40x = 108,806,520.60 × 21,419,617.20
  4. Step 4: Simplify right side
    72,537,680.40x = 2,330,594,020,115,914
  5. Step 5: Solve for x
    x = 2,330,594,020,115,914/72,537,680.40
  6. Step 6: Final answer
    x = 32,129,425.80

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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.