Home / 78,145.52-107,833.76-46,309.28

Finding the Fourth Proportional to 78,145.52, 107,833.76 and 46,309.28

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Solution

The fourth proportional to 78,145.52, 107,833.76 and 46,309.28 is: 63,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,145.52 : 107,833.76 = 46,309.28 : x
  2. Step 2: Convert to fraction form
    78,145.52/107,833.76 = 46,309.28/x
  3. Step 3: Cross multiply
    78,145.52x = 107,833.76 × 46,309.28
  4. Step 4: Simplify right side
    78,145.52x = 4,993,703,785.29
  5. Step 5: Solve for x
    x = 4,993,703,785.29/78,145.52
  6. Step 6: Final answer
    x = 63,902.62

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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.