Home / 78,732,343.20-118,098,514.80-54,073,480.80

Finding the Fourth Proportional to 78,732,343.20, 118,098,514.80 and 54,073,480.80

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Solution

The fourth proportional to 78,732,343.20, 118,098,514.80 and 54,073,480.80 is: 81,110,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,343.20 : 118,098,514.80 = 54,073,480.80 : x
  2. Step 2: Convert to fraction form
    78,732,343.20/118,098,514.80 = 54,073,480.80/x
  3. Step 3: Cross multiply
    78,732,343.20x = 118,098,514.80 × 54,073,480.80
  4. Step 4: Simplify right side
    78,732,343.20x = 6,385,997,772,546,315
  5. Step 5: Solve for x
    x = 6,385,997,772,546,315/78,732,343.20
  6. Step 6: Final answer
    x = 81,110,221.20

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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.