Home / 80,881,036.20-121,321,554.30-76,416,931.80

Finding the Fourth Proportional to 80,881,036.20, 121,321,554.30 and 76,416,931.80

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Solution

The fourth proportional to 80,881,036.20, 121,321,554.30 and 76,416,931.80 is: 114,625,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,881,036.20 : 121,321,554.30 = 76,416,931.80 : x
  2. Step 2: Convert to fraction form
    80,881,036.20/121,321,554.30 = 76,416,931.80/x
  3. Step 3: Cross multiply
    80,881,036.20x = 121,321,554.30 × 76,416,931.80
  4. Step 4: Simplify right side
    80,881,036.20x = 9,271,020,940,813,096
  5. Step 5: Solve for x
    x = 9,271,020,940,813,096/80,881,036.20
  6. Step 6: Final answer
    x = 114,625,397.70

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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.