Home / 81,428,442.01-122,142,585.25-20,844,070.81

Finding the Fourth Proportional to 81,428,442.01, 122,142,585.25 and 20,844,070.81

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Solution

The fourth proportional to 81,428,442.01, 122,142,585.25 and 20,844,070.81 is: 31,266,086.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428,442.01 : 122,142,585.25 = 20,844,070.81 : x
  2. Step 2: Convert to fraction form
    81,428,442.01/122,142,585.25 = 20,844,070.81/x
  3. Step 3: Cross multiply
    81,428,442.01x = 122,142,585.25 × 20,844,070.81
  4. Step 4: Simplify right side
    81,428,442.01x = 2,545,948,695,867,461.50
  5. Step 5: Solve for x
    x = 2,545,948,695,867,461.50/81,428,442.01
  6. Step 6: Final answer
    x = 31,266,086.31

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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.