Home / 55,861.68-77,089.32-30,711.36

Finding the Fourth Proportional to 55,861.68, 77,089.32 and 30,711.36

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Solution

The fourth proportional to 55,861.68, 77,089.32 and 30,711.36 is: 42,381.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,861.68 : 77,089.32 = 30,711.36 : x
  2. Step 2: Convert to fraction form
    55,861.68/77,089.32 = 30,711.36/x
  3. Step 3: Cross multiply
    55,861.68x = 77,089.32 × 30,711.36
  4. Step 4: Simplify right side
    55,861.68x = 2,367,517,858.68
  5. Step 5: Solve for x
    x = 2,367,517,858.68/55,861.68
  6. Step 6: Final answer
    x = 42,381.79

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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.