Home / 86,540.20-129,810.30-49,085.80

Finding the Fourth Proportional to 86,540.20, 129,810.30 and 49,085.80

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Solution

The fourth proportional to 86,540.20, 129,810.30 and 49,085.80 is: 73,628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,540.20 : 129,810.30 = 49,085.80 : x
  2. Step 2: Convert to fraction form
    86,540.20/129,810.30 = 49,085.80/x
  3. Step 3: Cross multiply
    86,540.20x = 129,810.30 × 49,085.80
  4. Step 4: Simplify right side
    86,540.20x = 6,371,842,423.74
  5. Step 5: Solve for x
    x = 6,371,842,423.74/86,540.20
  6. Step 6: Final answer
    x = 73,628.70

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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.