Home / 81,192,641.70-121,788,962.55-76,409,672.70

Finding the Fourth Proportional to 81,192,641.70, 121,788,962.55 and 76,409,672.70

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Solution

The fourth proportional to 81,192,641.70, 121,788,962.55 and 76,409,672.70 is: 114,614,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,641.70 : 121,788,962.55 = 76,409,672.70 : x
  2. Step 2: Convert to fraction form
    81,192,641.70/121,788,962.55 = 76,409,672.70/x
  3. Step 3: Cross multiply
    81,192,641.70x = 121,788,962.55 × 76,409,672.70
  4. Step 4: Simplify right side
    81,192,641.70x = 9,305,854,766,918,058
  5. Step 5: Solve for x
    x = 9,305,854,766,918,058/81,192,641.70
  6. Step 6: Final answer
    x = 114,614,509.05

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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.