Home / 80,851,502.20-121,282,502.10-42,587,750.20

Finding the Fourth Proportional to 80,851,502.20, 121,282,502.10 and 42,587,750.20

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Solution

The fourth proportional to 80,851,502.20, 121,282,502.10 and 42,587,750.20 is: 63,884,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,851,502.20 : 121,282,502.10 = 42,587,750.20 : x
  2. Step 2: Convert to fraction form
    80,851,502.20/121,282,502.10 = 42,587,750.20/x
  3. Step 3: Cross multiply
    80,851,502.20x = 121,282,502.10 × 42,587,750.20
  4. Step 4: Simplify right side
    80,851,502.20x = 5,165,148,903,065,776
  5. Step 5: Solve for x
    x = 5,165,148,903,065,776/80,851,502.20
  6. Step 6: Final answer
    x = 63,884,390.05

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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.