Home / 57,065.96-78,772.20-42,959.72

Finding the Fourth Proportional to 57,065.96, 78,772.20 and 42,959.72

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Solution

The fourth proportional to 57,065.96, 78,772.20 and 42,959.72 is: 59,300.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,065.96 : 78,772.20 = 42,959.72 : x
  2. Step 2: Convert to fraction form
    57,065.96/78,772.20 = 42,959.72/x
  3. Step 3: Cross multiply
    57,065.96x = 78,772.20 × 42,959.72
  4. Step 4: Simplify right side
    57,065.96x = 3,384,031,655.78
  5. Step 5: Solve for x
    x = 3,384,031,655.78/57,065.96
  6. Step 6: Final answer
    x = 59,300.35

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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.