Home / 65,350.76-90,112.00-45,172.61

Finding the Fourth Proportional to 65,350.76, 90,112.00 and 45,172.61

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Solution

The fourth proportional to 65,350.76, 90,112.00 and 45,172.61 is: 62,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,350.76 : 90,112.00 = 45,172.61 : x
  2. Step 2: Convert to fraction form
    65,350.76/90,112.00 = 45,172.61/x
  3. Step 3: Cross multiply
    65,350.76x = 90,112.00 × 45,172.61
  4. Step 4: Simplify right side
    65,350.76x = 4,070,593,668.83
  5. Step 5: Solve for x
    x = 4,070,593,668.83/65,350.76
  6. Step 6: Final answer
    x = 62,288.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.