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Finding the Fourth Proportional to 81,607.90, 122,404.65 and 22,438.30

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Solution

The fourth proportional to 81,607.90, 122,404.65 and 22,438.30 is: 33,655.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,607.90 : 122,404.65 = 22,438.30 : x
  2. Step 2: Convert to fraction form
    81,607.90/122,404.65 = 22,438.30/x
  3. Step 3: Cross multiply
    81,607.90x = 122,404.65 × 22,438.30
  4. Step 4: Simplify right side
    81,607.90x = 2,746,552,258.10
  5. Step 5: Solve for x
    x = 2,746,552,258.10/81,607.90
  6. Step 6: Final answer
    x = 33,655.47

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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.