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Finding the Fourth Proportional to 66,132.64, 91,259.76 and 37,447.84

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Solution

The fourth proportional to 66,132.64, 91,259.76 and 37,447.84 is: 51,676.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,132.64 : 91,259.76 = 37,447.84 : x
  2. Step 2: Convert to fraction form
    66,132.64/91,259.76 = 37,447.84/x
  3. Step 3: Cross multiply
    66,132.64x = 91,259.76 × 37,447.84
  4. Step 4: Simplify right side
    66,132.64x = 3,417,480,890.92
  5. Step 5: Solve for x
    x = 3,417,480,890.92/66,132.64
  6. Step 6: Final answer
    x = 51,676.16

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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.