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Finding the Fourth Proportional to 61,008.10, 91,512.15 and 21,564.90

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Solution

The fourth proportional to 61,008.10, 91,512.15 and 21,564.90 is: 32,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,008.10 : 91,512.15 = 21,564.90 : x
  2. Step 2: Convert to fraction form
    61,008.10/91,512.15 = 21,564.90/x
  3. Step 3: Cross multiply
    61,008.10x = 91,512.15 × 21,564.90
  4. Step 4: Simplify right side
    61,008.10x = 1,973,450,363.54
  5. Step 5: Solve for x
    x = 1,973,450,363.54/61,008.10
  6. Step 6: Final answer
    x = 32,347.35

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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.