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Finding the Fourth Proportional to 80,986,277.80, 121,479,416.70 and 74,750,703.40

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Solution

The fourth proportional to 80,986,277.80, 121,479,416.70 and 74,750,703.40 is: 112,126,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986,277.80 : 121,479,416.70 = 74,750,703.40 : x
  2. Step 2: Convert to fraction form
    80,986,277.80/121,479,416.70 = 74,750,703.40/x
  3. Step 3: Cross multiply
    80,986,277.80x = 121,479,416.70 × 74,750,703.40
  4. Step 4: Simplify right side
    80,986,277.80x = 9,080,671,846,946,708
  5. Step 5: Solve for x
    x = 9,080,671,846,946,708/80,986,277.80
  6. Step 6: Final answer
    x = 112,126,055.10

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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.