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Finding the Fourth Proportional to 83,345.65, 115,016.75 and 45,619.63

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Solution

The fourth proportional to 83,345.65, 115,016.75 and 45,619.63 is: 62,954.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,345.65 : 115,016.75 = 45,619.63 : x
  2. Step 2: Convert to fraction form
    83,345.65/115,016.75 = 45,619.63/x
  3. Step 3: Cross multiply
    83,345.65x = 115,016.75 × 45,619.63
  4. Step 4: Simplify right side
    83,345.65x = 5,247,021,578.80
  5. Step 5: Solve for x
    x = 5,247,021,578.80/83,345.65
  6. Step 6: Final answer
    x = 62,954.95

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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.