Home / 78,732,067.80-118,098,101.70-42,452,362.20

Finding the Fourth Proportional to 78,732,067.80, 118,098,101.70 and 42,452,362.20

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Solution

The fourth proportional to 78,732,067.80, 118,098,101.70 and 42,452,362.20 is: 63,678,543.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,067.80 : 118,098,101.70 = 42,452,362.20 : x
  2. Step 2: Convert to fraction form
    78,732,067.80/118,098,101.70 = 42,452,362.20/x
  3. Step 3: Cross multiply
    78,732,067.80x = 118,098,101.70 × 42,452,362.20
  4. Step 4: Simplify right side
    78,732,067.80x = 5,013,543,388,500,836
  5. Step 5: Solve for x
    x = 5,013,543,388,500,836/78,732,067.80
  6. Step 6: Final answer
    x = 63,678,543.30

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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.