Home / 81,701,986.60-122,552,979.90-75,466,412.20

Finding the Fourth Proportional to 81,701,986.60, 122,552,979.90 and 75,466,412.20

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Solution

The fourth proportional to 81,701,986.60, 122,552,979.90 and 75,466,412.20 is: 113,199,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,701,986.60 : 122,552,979.90 = 75,466,412.20 : x
  2. Step 2: Convert to fraction form
    81,701,986.60/122,552,979.90 = 75,466,412.20/x
  3. Step 3: Cross multiply
    81,701,986.60x = 122,552,979.90 × 75,466,412.20
  4. Step 4: Simplify right side
    81,701,986.60x = 9,248,633,697,471,716
  5. Step 5: Solve for x
    x = 9,248,633,697,471,716/81,701,986.60
  6. Step 6: Final answer
    x = 113,199,618.30

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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.