Home / 78,640.02-108,595.35-49,969.13

Finding the Fourth Proportional to 78,640.02, 108,595.35 and 49,969.13

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Solution

The fourth proportional to 78,640.02, 108,595.35 and 49,969.13 is: 69,003.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,640.02 : 108,595.35 = 49,969.13 : x
  2. Step 2: Convert to fraction form
    78,640.02/108,595.35 = 49,969.13/x
  3. Step 3: Cross multiply
    78,640.02x = 108,595.35 × 49,969.13
  4. Step 4: Simplify right side
    78,640.02x = 5,426,414,618.57
  5. Step 5: Solve for x
    x = 5,426,414,618.57/78,640.02
  6. Step 6: Final answer
    x = 69,003.22

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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.