Home / 105,780.24-145,976-58,035.60

Finding the Fourth Proportional to 105,780.24, 145,976 and 58,035.60

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Solution

The fourth proportional to 105,780.24, 145,976 and 58,035.60 is: 80,088.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,780.24 : 145,976 = 58,035.60 : x
  2. Step 2: Convert to fraction form
    105,780.24/145,976 = 58,035.60/x
  3. Step 3: Cross multiply
    105,780.24x = 145,976 × 58,035.60
  4. Step 4: Simplify right side
    105,780.24x = 8,471,804,745.60
  5. Step 5: Solve for x
    x = 8,471,804,745.60/105,780.24
  6. Step 6: Final answer
    x = 80,088.73

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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.