Home / 51,090.12-70,502.56-28,117.78

Finding the Fourth Proportional to 51,090.12, 70,502.56 and 28,117.78

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Solution

The fourth proportional to 51,090.12, 70,502.56 and 28,117.78 is: 38,801.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,090.12 : 70,502.56 = 28,117.78 : x
  2. Step 2: Convert to fraction form
    51,090.12/70,502.56 = 28,117.78/x
  3. Step 3: Cross multiply
    51,090.12x = 70,502.56 × 28,117.78
  4. Step 4: Simplify right side
    51,090.12x = 1,982,375,471.52
  5. Step 5: Solve for x
    x = 1,982,375,471.52/51,090.12
  6. Step 6: Final answer
    x = 38,801.54

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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.