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Finding the Fourth Proportional to 81,588.90, 122,333.40 and 74,627.58

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Solution

The fourth proportional to 81,588.90, 122,333.40 and 74,627.58 is: 111,895.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,588.90 : 122,333.40 = 74,627.58 : x
  2. Step 2: Convert to fraction form
    81,588.90/122,333.40 = 74,627.58/x
  3. Step 3: Cross multiply
    81,588.90x = 122,333.40 × 74,627.58
  4. Step 4: Simplify right side
    81,588.90x = 9,129,445,595.17
  5. Step 5: Solve for x
    x = 9,129,445,595.17/81,588.90
  6. Step 6: Final answer
    x = 111,895.68

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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.