Home / 83,121,811.20-124,684,855.20-39,392,308.80

Finding the Fourth Proportional to 83,121,811.20, 124,684,855.20 and 39,392,308.80

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Solution

The fourth proportional to 83,121,811.20, 124,684,855.20 and 39,392,308.80 is: 59,089,476.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,121,811.20 : 124,684,855.20 = 39,392,308.80 : x
  2. Step 2: Convert to fraction form
    83,121,811.20/124,684,855.20 = 39,392,308.80/x
  3. Step 3: Cross multiply
    83,121,811.20x = 124,684,855.20 × 39,392,308.80
  4. Step 4: Simplify right side
    83,121,811.20x = 4,911,624,318,721,686
  5. Step 5: Solve for x
    x = 4,911,624,318,721,686/83,121,811.20
  6. Step 6: Final answer
    x = 59,089,476.61

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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.