Home / 81,840,415.60-122,807,862.60-30,727,601.20

Finding the Fourth Proportional to 81,840,415.60, 122,807,862.60 and 30,727,601.20

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Solution

The fourth proportional to 81,840,415.60, 122,807,862.60 and 30,727,601.20 is: 46,109,138.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,840,415.60 : 122,807,862.60 = 30,727,601.20 : x
  2. Step 2: Convert to fraction form
    81,840,415.60/122,807,862.60 = 30,727,601.20/x
  3. Step 3: Cross multiply
    81,840,415.60x = 122,807,862.60 × 30,727,601.20
  4. Step 4: Simplify right side
    81,840,415.60x = 3,773,591,026,197,195
  5. Step 5: Solve for x
    x = 3,773,591,026,197,195/81,840,415.60
  6. Step 6: Final answer
    x = 46,109,138.11

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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.