Home / 85,363.12-117,807.78-47,643.04

Finding the Fourth Proportional to 85,363.12, 117,807.78 and 47,643.04

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Solution

The fourth proportional to 85,363.12, 117,807.78 and 47,643.04 is: 65,751.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,363.12 : 117,807.78 = 47,643.04 : x
  2. Step 2: Convert to fraction form
    85,363.12/117,807.78 = 47,643.04/x
  3. Step 3: Cross multiply
    85,363.12x = 117,807.78 × 47,643.04
  4. Step 4: Simplify right side
    85,363.12x = 5,612,720,774.85
  5. Step 5: Solve for x
    x = 5,612,720,774.85/85,363.12
  6. Step 6: Final answer
    x = 65,751.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.