Home / 78,718.08-108,569.52-50,426.40

Finding the Fourth Proportional to 78,718.08, 108,569.52 and 50,426.40

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Solution

The fourth proportional to 78,718.08, 108,569.52 and 50,426.40 is: 69,549.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,718.08 : 108,569.52 = 50,426.40 : x
  2. Step 2: Convert to fraction form
    78,718.08/108,569.52 = 50,426.40/x
  3. Step 3: Cross multiply
    78,718.08x = 108,569.52 × 50,426.40
  4. Step 4: Simplify right side
    78,718.08x = 5,474,770,043.33
  5. Step 5: Solve for x
    x = 5,474,770,043.33/78,718.08
  6. Step 6: Final answer
    x = 69,549.08

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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.