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Finding the Fourth Proportional to 77,959.97, 116,888.12 and 42,916.13

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Solution

The fourth proportional to 77,959.97, 116,888.12 and 42,916.13 is: 64,345.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,959.97 : 116,888.12 = 42,916.13 : x
  2. Step 2: Convert to fraction form
    77,959.97/116,888.12 = 42,916.13/x
  3. Step 3: Cross multiply
    77,959.97x = 116,888.12 × 42,916.13
  4. Step 4: Simplify right side
    77,959.97x = 5,016,385,538.79
  5. Step 5: Solve for x
    x = 5,016,385,538.79/77,959.97
  6. Step 6: Final answer
    x = 64,345.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.