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Finding the Fourth Proportional to 40,511.80, 60,767.70 and 15,887.80

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Solution

The fourth proportional to 40,511.80, 60,767.70 and 15,887.80 is: 23,831.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,511.80 : 60,767.70 = 15,887.80 : x
  2. Step 2: Convert to fraction form
    40,511.80/60,767.70 = 15,887.80/x
  3. Step 3: Cross multiply
    40,511.80x = 60,767.70 × 15,887.80
  4. Step 4: Simplify right side
    40,511.80x = 965,465,064.06
  5. Step 5: Solve for x
    x = 965,465,064.06/40,511.80
  6. Step 6: Final answer
    x = 23,831.70

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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.