Home / 81,192,449.70-121,788,674.55-65,886,948.90

Finding the Fourth Proportional to 81,192,449.70, 121,788,674.55 and 65,886,948.90

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Solution

The fourth proportional to 81,192,449.70, 121,788,674.55 and 65,886,948.90 is: 98,830,423.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,449.70 : 121,788,674.55 = 65,886,948.90 : x
  2. Step 2: Convert to fraction form
    81,192,449.70/121,788,674.55 = 65,886,948.90/x
  3. Step 3: Cross multiply
    81,192,449.70x = 121,788,674.55 × 65,886,948.90
  4. Step 4: Simplify right side
    81,192,449.70x = 8,024,284,176,674,580
  5. Step 5: Solve for x
    x = 8,024,284,176,674,580/81,192,449.70
  6. Step 6: Final answer
    x = 98,830,423.35

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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.