Home / 78,509.43-108,371.19-46,678.25

Finding the Fourth Proportional to 78,509.43, 108,371.19 and 46,678.25

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Solution

The fourth proportional to 78,509.43, 108,371.19 and 46,678.25 is: 64,432.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,509.43 : 108,371.19 = 46,678.25 : x
  2. Step 2: Convert to fraction form
    78,509.43/108,371.19 = 46,678.25/x
  3. Step 3: Cross multiply
    78,509.43x = 108,371.19 × 46,678.25
  4. Step 4: Simplify right side
    78,509.43x = 5,058,577,499.62
  5. Step 5: Solve for x
    x = 5,058,577,499.62/78,509.43
  6. Step 6: Final answer
    x = 64,432.74

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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.