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Finding the Fourth Proportional to 66,225.16, 91,403.70 and 37,949.80

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Solution

The fourth proportional to 66,225.16, 91,403.70 and 37,949.80 is: 52,378.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,225.16 : 91,403.70 = 37,949.80 : x
  2. Step 2: Convert to fraction form
    66,225.16/91,403.70 = 37,949.80/x
  3. Step 3: Cross multiply
    66,225.16x = 91,403.70 × 37,949.80
  4. Step 4: Simplify right side
    66,225.16x = 3,468,752,134.26
  5. Step 5: Solve for x
    x = 3,468,752,134.26/66,225.16
  6. Step 6: Final answer
    x = 52,378.16

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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.