Home / 85,314.90-127,787.66-55,642.72

Finding the Fourth Proportional to 85,314.90, 127,787.66 and 55,642.72

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Solution

The fourth proportional to 85,314.90, 127,787.66 and 55,642.72 is: 83,343.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,314.90 : 127,787.66 = 55,642.72 : x
  2. Step 2: Convert to fraction form
    85,314.90/127,787.66 = 55,642.72/x
  3. Step 3: Cross multiply
    85,314.90x = 127,787.66 × 55,642.72
  4. Step 4: Simplify right side
    85,314.90x = 7,110,452,984.84
  5. Step 5: Solve for x
    x = 7,110,452,984.84/85,314.90
  6. Step 6: Final answer
    x = 83,343.62

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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.