Home / 78,687,517.80-118,031,276.70-55,729,266.60

Finding the Fourth Proportional to 78,687,517.80, 118,031,276.70 and 55,729,266.60

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Solution

The fourth proportional to 78,687,517.80, 118,031,276.70 and 55,729,266.60 is: 83,593,899.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,687,517.80 : 118,031,276.70 = 55,729,266.60 : x
  2. Step 2: Convert to fraction form
    78,687,517.80/118,031,276.70 = 55,729,266.60/x
  3. Step 3: Cross multiply
    78,687,517.80x = 118,031,276.70 × 55,729,266.60
  4. Step 4: Simplify right side
    78,687,517.80x = 6,577,796,486,352,669
  5. Step 5: Solve for x
    x = 6,577,796,486,352,669/78,687,517.80
  6. Step 6: Final answer
    x = 83,593,899.90

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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.