Home / 85,290.75-127,872.94-40,875.21

Finding the Fourth Proportional to 85,290.75, 127,872.94 and 40,875.21

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Solution

The fourth proportional to 85,290.75, 127,872.94 and 40,875.21 is: 61,282.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,290.75 : 127,872.94 = 40,875.21 : x
  2. Step 2: Convert to fraction form
    85,290.75/127,872.94 = 40,875.21/x
  3. Step 3: Cross multiply
    85,290.75x = 127,872.94 × 40,875.21
  4. Step 4: Simplify right side
    85,290.75x = 5,226,833,275.82
  5. Step 5: Solve for x
    x = 5,226,833,275.82/85,290.75
  6. Step 6: Final answer
    x = 61,282.53

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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.