Home / 55,955.68-77,219.13-30,805.18

Finding the Fourth Proportional to 55,955.68, 77,219.13 and 30,805.18

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Solution

The fourth proportional to 55,955.68, 77,219.13 and 30,805.18 is: 42,511.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,955.68 : 77,219.13 = 30,805.18 : x
  2. Step 2: Convert to fraction form
    55,955.68/77,219.13 = 30,805.18/x
  3. Step 3: Cross multiply
    55,955.68x = 77,219.13 × 30,805.18
  4. Step 4: Simplify right side
    55,955.68x = 2,378,749,199.09
  5. Step 5: Solve for x
    x = 2,378,749,199.09/55,955.68
  6. Step 6: Final answer
    x = 42,511.31

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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.