Home / 80,843,431.80-121,341,255.30-42,532,440.60

Finding the Fourth Proportional to 80,843,431.80, 121,341,255.30 and 42,532,440.60

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Solution

The fourth proportional to 80,843,431.80, 121,341,255.30 and 42,532,440.60 is: 63,838,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,843,431.80 : 121,341,255.30 = 42,532,440.60 : x
  2. Step 2: Convert to fraction form
    80,843,431.80/121,341,255.30 = 42,532,440.60/x
  3. Step 3: Cross multiply
    80,843,431.80x = 121,341,255.30 × 42,532,440.60
  4. Step 4: Simplify right side
    80,843,431.80x = 5,160,939,733,376,685
  5. Step 5: Solve for x
    x = 5,160,939,733,376,685/80,843,431.80
  6. Step 6: Final answer
    x = 63,838,701.78

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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.