Home / 80,841,156.90-121,279,450.05-39,920,199.90

Finding the Fourth Proportional to 80,841,156.90, 121,279,450.05 and 39,920,199.90

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Solution

The fourth proportional to 80,841,156.90, 121,279,450.05 and 39,920,199.90 is: 59,889,047.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,841,156.90 : 121,279,450.05 = 39,920,199.90 : x
  2. Step 2: Convert to fraction form
    80,841,156.90/121,279,450.05 = 39,920,199.90/x
  3. Step 3: Cross multiply
    80,841,156.90x = 121,279,450.05 × 39,920,199.90
  4. Step 4: Simplify right side
    80,841,156.90x = 4,841,499,889,758,065
  5. Step 5: Solve for x
    x = 4,841,499,889,758,065/80,841,156.90
  6. Step 6: Final answer
    x = 59,889,047.55

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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.