Home / 56,203.09-77,559.34-30,708.90

Finding the Fourth Proportional to 56,203.09, 77,559.34 and 30,708.90

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Solution

The fourth proportional to 56,203.09, 77,559.34 and 30,708.90 is: 42,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,203.09 : 77,559.34 = 30,708.90 : x
  2. Step 2: Convert to fraction form
    56,203.09/77,559.34 = 30,708.90/x
  3. Step 3: Cross multiply
    56,203.09x = 77,559.34 × 30,708.90
  4. Step 4: Simplify right side
    56,203.09x = 2,381,762,016.13
  5. Step 5: Solve for x
    x = 2,381,762,016.13/56,203.09
  6. Step 6: Final answer
    x = 42,377.78

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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.