Home / 83,946.40-125,905.20-31,328.80

Finding the Fourth Proportional to 83,946.40, 125,905.20 and 31,328.80

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Solution

The fourth proportional to 83,946.40, 125,905.20 and 31,328.80 is: 46,987.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,946.40 : 125,905.20 = 31,328.80 : x
  2. Step 2: Convert to fraction form
    83,946.40/125,905.20 = 31,328.80/x
  3. Step 3: Cross multiply
    83,946.40x = 125,905.20 × 31,328.80
  4. Step 4: Simplify right side
    83,946.40x = 3,944,458,829.76
  5. Step 5: Solve for x
    x = 3,944,458,829.76/83,946.40
  6. Step 6: Final answer
    x = 46,987.83

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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.