Home / 56,486.06-77,951.55-30,991.95

Finding the Fourth Proportional to 56,486.06, 77,951.55 and 30,991.95

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Solution

The fourth proportional to 56,486.06, 77,951.55 and 30,991.95 is: 42,769.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,486.06 : 77,951.55 = 30,991.95 : x
  2. Step 2: Convert to fraction form
    56,486.06/77,951.55 = 30,991.95/x
  3. Step 3: Cross multiply
    56,486.06x = 77,951.55 × 30,991.95
  4. Step 4: Simplify right side
    56,486.06x = 2,415,870,540.02
  5. Step 5: Solve for x
    x = 2,415,870,540.02/56,486.06
  6. Step 6: Final answer
    x = 42,769.32

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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.