Home / 61,217.10-91,784.34-21,225.78

Finding the Fourth Proportional to 61,217.10, 91,784.34 and 21,225.78

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Solution

The fourth proportional to 61,217.10, 91,784.34 and 21,225.78 is: 31,824.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,217.10 : 91,784.34 = 21,225.78 : x
  2. Step 2: Convert to fraction form
    61,217.10/91,784.34 = 21,225.78/x
  3. Step 3: Cross multiply
    61,217.10x = 91,784.34 × 21,225.78
  4. Step 4: Simplify right side
    61,217.10x = 1,948,194,208.29
  5. Step 5: Solve for x
    x = 1,948,194,208.29/61,217.10
  6. Step 6: Final answer
    x = 31,824.35

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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.