Home / 78,382.55-108,168.75-42,573.26

Finding the Fourth Proportional to 78,382.55, 108,168.75 and 42,573.26

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Solution

The fourth proportional to 78,382.55, 108,168.75 and 42,573.26 is: 58,751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,382.55 : 108,168.75 = 42,573.26 : x
  2. Step 2: Convert to fraction form
    78,382.55/108,168.75 = 42,573.26/x
  3. Step 3: Cross multiply
    78,382.55x = 108,168.75 × 42,573.26
  4. Step 4: Simplify right side
    78,382.55x = 4,605,096,588.05
  5. Step 5: Solve for x
    x = 4,605,096,588.05/78,382.55
  6. Step 6: Final answer
    x = 58,751.55

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1.5x scale

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.