Home / 56,351.09-77,761.05-30,857.76

Finding the Fourth Proportional to 56,351.09, 77,761.05 and 30,857.76

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Solution

The fourth proportional to 56,351.09, 77,761.05 and 30,857.76 is: 42,581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,351.09 : 77,761.05 = 30,857.76 : x
  2. Step 2: Convert to fraction form
    56,351.09/77,761.05 = 30,857.76/x
  3. Step 3: Cross multiply
    56,351.09x = 77,761.05 × 30,857.76
  4. Step 4: Simplify right side
    56,351.09x = 2,399,531,818.25
  5. Step 5: Solve for x
    x = 2,399,531,818.25/56,351.09
  6. Step 6: Final answer
    x = 42,581.82

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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.