Home / 80,643,190.40-120,964,785.60-57,968,374.40

Finding the Fourth Proportional to 80,643,190.40, 120,964,785.60 and 57,968,374.40

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Solution

The fourth proportional to 80,643,190.40, 120,964,785.60 and 57,968,374.40 is: 86,952,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643,190.40 : 120,964,785.60 = 57,968,374.40 : x
  2. Step 2: Convert to fraction form
    80,643,190.40/120,964,785.60 = 57,968,374.40/x
  3. Step 3: Cross multiply
    80,643,190.40x = 120,964,785.60 × 57,968,374.40
  4. Step 4: Simplify right side
    80,643,190.40x = 7,012,131,980,876,528
  5. Step 5: Solve for x
    x = 7,012,131,980,876,528/80,643,190.40
  6. Step 6: Final answer
    x = 86,952,561.60

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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.