Home / 81,552,007.20-122,328,010.80-45,272,301.60

Finding the Fourth Proportional to 81,552,007.20, 122,328,010.80 and 45,272,301.60

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Solution

The fourth proportional to 81,552,007.20, 122,328,010.80 and 45,272,301.60 is: 67,908,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,552,007.20 : 122,328,010.80 = 45,272,301.60 : x
  2. Step 2: Convert to fraction form
    81,552,007.20/122,328,010.80 = 45,272,301.60/x
  3. Step 3: Cross multiply
    81,552,007.20x = 122,328,010.80 × 45,272,301.60
  4. Step 4: Simplify right side
    81,552,007.20x = 5,538,070,599,065,657
  5. Step 5: Solve for x
    x = 5,538,070,599,065,657/81,552,007.20
  6. Step 6: Final answer
    x = 67,908,452.40

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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.