Home / 80,841,214.40-121,279,536.30-39,920,257.40

Finding the Fourth Proportional to 80,841,214.40, 121,279,536.30 and 39,920,257.40

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Solution

The fourth proportional to 80,841,214.40, 121,279,536.30 and 39,920,257.40 is: 59,889,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,841,214.40 : 121,279,536.30 = 39,920,257.40 : x
  2. Step 2: Convert to fraction form
    80,841,214.40/121,279,536.30 = 39,920,257.40/x
  3. Step 3: Cross multiply
    80,841,214.40x = 121,279,536.30 × 39,920,257.40
  4. Step 4: Simplify right side
    80,841,214.40x = 4,841,510,306,448,643
  5. Step 5: Solve for x
    x = 4,841,510,306,448,643/80,841,214.40
  6. Step 6: Final answer
    x = 59,889,133.81

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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.