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Finding the Fourth Proportional to 55,959.71, 77,224.25 and 30,809.21

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Solution

The fourth proportional to 55,959.71, 77,224.25 and 30,809.21 is: 42,516.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,959.71 : 77,224.25 = 30,809.21 : x
  2. Step 2: Convert to fraction form
    55,959.71/77,224.25 = 30,809.21/x
  3. Step 3: Cross multiply
    55,959.71x = 77,224.25 × 30,809.21
  4. Step 4: Simplify right side
    55,959.71x = 2,379,217,826.24
  5. Step 5: Solve for x
    x = 2,379,217,826.24/55,959.71
  6. Step 6: Final answer
    x = 42,516.63

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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.