Home / 83,808.56-115,623.09-47,979.42

Finding the Fourth Proportional to 83,808.56, 115,623.09 and 47,979.42

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Solution

The fourth proportional to 83,808.56, 115,623.09 and 47,979.42 is: 66,192.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,808.56 : 115,623.09 = 47,979.42 : x
  2. Step 2: Convert to fraction form
    83,808.56/115,623.09 = 47,979.42/x
  3. Step 3: Cross multiply
    83,808.56x = 115,623.09 × 47,979.42
  4. Step 4: Simplify right side
    83,808.56x = 5,547,528,796.81
  5. Step 5: Solve for x
    x = 5,547,528,796.81/83,808.56
  6. Step 6: Final answer
    x = 66,192.87

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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.