Home / 105,695.30-145,856.36-57,947.02

Finding the Fourth Proportional to 105,695.30, 145,856.36 and 57,947.02

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Solution

The fourth proportional to 105,695.30, 145,856.36 and 57,947.02 is: 79,965.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,695.30 : 145,856.36 = 57,947.02 : x
  2. Step 2: Convert to fraction form
    105,695.30/145,856.36 = 57,947.02/x
  3. Step 3: Cross multiply
    105,695.30x = 145,856.36 × 57,947.02
  4. Step 4: Simplify right side
    105,695.30x = 8,451,940,391.03
  5. Step 5: Solve for x
    x = 8,451,940,391.03/105,695.30
  6. Step 6: Final answer
    x = 79,965.15

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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.