Home / 78,766.20-118,226.10-39,367.80

Finding the Fourth Proportional to 78,766.20, 118,226.10 and 39,367.80

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Solution

The fourth proportional to 78,766.20, 118,226.10 and 39,367.80 is: 59,090.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,766.20 : 118,226.10 = 39,367.80 : x
  2. Step 2: Convert to fraction form
    78,766.20/118,226.10 = 39,367.80/x
  3. Step 3: Cross multiply
    78,766.20x = 118,226.10 × 39,367.80
  4. Step 4: Simplify right side
    78,766.20x = 4,654,301,459.58
  5. Step 5: Solve for x
    x = 4,654,301,459.58/78,766.20
  6. Step 6: Final answer
    x = 59,090.09

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1.5x scale

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.