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Finding the Fourth Proportional to 66,243.90, 99,365.85 and 58,986.30

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Solution

The fourth proportional to 66,243.90, 99,365.85 and 58,986.30 is: 88,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,243.90 : 99,365.85 = 58,986.30 : x
  2. Step 2: Convert to fraction form
    66,243.90/99,365.85 = 58,986.30/x
  3. Step 3: Cross multiply
    66,243.90x = 99,365.85 × 58,986.30
  4. Step 4: Simplify right side
    66,243.90x = 5,861,223,837.86
  5. Step 5: Solve for x
    x = 5,861,223,837.86/66,243.90
  6. Step 6: Final answer
    x = 88,479.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.