Home / 85,178,133.60-127,767,200.40-39,744,520.80

Finding the Fourth Proportional to 85,178,133.60, 127,767,200.40 and 39,744,520.80

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Solution

The fourth proportional to 85,178,133.60, 127,767,200.40 and 39,744,520.80 is: 59,616,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,178,133.60 : 127,767,200.40 = 39,744,520.80 : x
  2. Step 2: Convert to fraction form
    85,178,133.60/127,767,200.40 = 39,744,520.80/x
  3. Step 3: Cross multiply
    85,178,133.60x = 127,767,200.40 × 39,744,520.80
  4. Step 4: Simplify right side
    85,178,133.60x = 5,078,046,153,855,568
  5. Step 5: Solve for x
    x = 5,078,046,153,855,568/85,178,133.60
  6. Step 6: Final answer
    x = 59,616,781.20

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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.