Home / 80,876,390.40-121,314,585.60-57,918,139.20

Finding the Fourth Proportional to 80,876,390.40, 121,314,585.60 and 57,918,139.20

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Solution

The fourth proportional to 80,876,390.40, 121,314,585.60 and 57,918,139.20 is: 86,877,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,876,390.40 : 121,314,585.60 = 57,918,139.20 : x
  2. Step 2: Convert to fraction form
    80,876,390.40/121,314,585.60 = 57,918,139.20/x
  3. Step 3: Cross multiply
    80,876,390.40x = 121,314,585.60 × 57,918,139.20
  4. Step 4: Simplify right side
    80,876,390.40x = 7,026,315,055,771,116
  5. Step 5: Solve for x
    x = 7,026,315,055,771,116/80,876,390.40
  6. Step 6: Final answer
    x = 86,877,208.80

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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.