Home / 83,640.51-115,424.33-47,832.03

Finding the Fourth Proportional to 83,640.51, 115,424.33 and 47,832.03

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Solution

The fourth proportional to 83,640.51, 115,424.33 and 47,832.03 is: 66,008.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,640.51 : 115,424.33 = 47,832.03 : x
  2. Step 2: Convert to fraction form
    83,640.51/115,424.33 = 47,832.03/x
  3. Step 3: Cross multiply
    83,640.51x = 115,424.33 × 47,832.03
  4. Step 4: Simplify right side
    83,640.51x = 5,520,979,776.13
  5. Step 5: Solve for x
    x = 5,520,979,776.13/83,640.51
  6. Step 6: Final answer
    x = 66,008.44

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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.