Home / 55,983.20-77,257.65-30,490.75

Finding the Fourth Proportional to 55,983.20, 77,257.65 and 30,490.75

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Solution

The fourth proportional to 55,983.20, 77,257.65 and 30,490.75 is: 42,077.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,983.20 : 77,257.65 = 30,490.75 : x
  2. Step 2: Convert to fraction form
    55,983.20/77,257.65 = 30,490.75/x
  3. Step 3: Cross multiply
    55,983.20x = 77,257.65 × 30,490.75
  4. Step 4: Simplify right side
    55,983.20x = 2,355,643,296.57
  5. Step 5: Solve for x
    x = 2,355,643,296.57/55,983.20
  6. Step 6: Final answer
    x = 42,077.68

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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.