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Finding the Fourth Proportional to 66,486.48, 91,924.20 and 63,548.88

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Solution

The fourth proportional to 66,486.48, 91,924.20 and 63,548.88 is: 87,862.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486.48 : 91,924.20 = 63,548.88 : x
  2. Step 2: Convert to fraction form
    66,486.48/91,924.20 = 63,548.88/x
  3. Step 3: Cross multiply
    66,486.48x = 91,924.20 × 63,548.88
  4. Step 4: Simplify right side
    66,486.48x = 5,841,679,954.90
  5. Step 5: Solve for x
    x = 5,841,679,954.90/66,486.48
  6. Step 6: Final answer
    x = 87,862.67

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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.