Home / 81,192,473.70-121,788,710.55-65,886,972.90

Finding the Fourth Proportional to 81,192,473.70, 121,788,710.55 and 65,886,972.90

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Solution

The fourth proportional to 81,192,473.70, 121,788,710.55 and 65,886,972.90 is: 98,830,459.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,473.70 : 121,788,710.55 = 65,886,972.90 : x
  2. Step 2: Convert to fraction form
    81,192,473.70/121,788,710.55 = 65,886,972.90/x
  3. Step 3: Cross multiply
    81,192,473.70x = 121,788,710.55 × 65,886,972.90
  4. Step 4: Simplify right side
    81,192,473.70x = 8,024,289,471,533,794
  5. Step 5: Solve for x
    x = 8,024,289,471,533,794/81,192,473.70
  6. Step 6: Final answer
    x = 98,830,459.35

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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.