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Finding the Fourth Proportional to 66,124.20, 91,251.78 and 37,831.08

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Solution

The fourth proportional to 66,124.20, 91,251.78 and 37,831.08 is: 52,207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,124.20 : 91,251.78 = 37,831.08 : x
  2. Step 2: Convert to fraction form
    66,124.20/91,251.78 = 37,831.08/x
  3. Step 3: Cross multiply
    66,124.20x = 91,251.78 × 37,831.08
  4. Step 4: Simplify right side
    66,124.20x = 3,452,153,389.32
  5. Step 5: Solve for x
    x = 3,452,153,389.32/66,124.20
  6. Step 6: Final answer
    x = 52,207.11

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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.