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Finding the Fourth Proportional to 61,008.12, 91,512.72 and 21,565.80

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Solution

The fourth proportional to 61,008.12, 91,512.72 and 21,565.80 is: 32,348.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,008.12 : 91,512.72 = 21,565.80 : x
  2. Step 2: Convert to fraction form
    61,008.12/91,512.72 = 21,565.80/x
  3. Step 3: Cross multiply
    61,008.12x = 91,512.72 × 21,565.80
  4. Step 4: Simplify right side
    61,008.12x = 1,973,545,016.98
  5. Step 5: Solve for x
    x = 1,973,545,016.98/61,008.12
  6. Step 6: Final answer
    x = 32,348.89

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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.