Home / 57,341.28-85,963.12-21,782.72

Finding the Fourth Proportional to 57,341.28, 85,963.12 and 21,782.72

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Solution

The fourth proportional to 57,341.28, 85,963.12 and 21,782.72 is: 32,655.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,341.28 : 85,963.12 = 21,782.72 : x
  2. Step 2: Convert to fraction form
    57,341.28/85,963.12 = 21,782.72/x
  3. Step 3: Cross multiply
    57,341.28x = 85,963.12 × 21,782.72
  4. Step 4: Simplify right side
    57,341.28x = 1,872,510,573.29
  5. Step 5: Solve for x
    x = 1,872,510,573.29/57,341.28
  6. Step 6: Final answer
    x = 32,655.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.