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Finding the Fourth Proportional to 66,036.88, 91,125.48 and 36,228.88

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Solution

The fourth proportional to 66,036.88, 91,125.48 and 36,228.88 is: 49,992.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,036.88 : 91,125.48 = 36,228.88 : x
  2. Step 2: Convert to fraction form
    66,036.88/91,125.48 = 36,228.88/x
  3. Step 3: Cross multiply
    66,036.88x = 91,125.48 × 36,228.88
  4. Step 4: Simplify right side
    66,036.88x = 3,301,374,079.86
  5. Step 5: Solve for x
    x = 3,301,374,079.86/66,036.88
  6. Step 6: Final answer
    x = 49,992.88

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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.