Home / 57,021.16-78,687.66-31,875.52

Finding the Fourth Proportional to 57,021.16, 78,687.66 and 31,875.52

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Solution

The fourth proportional to 57,021.16, 78,687.66 and 31,875.52 is: 43,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,021.16 : 78,687.66 = 31,875.52 : x
  2. Step 2: Convert to fraction form
    57,021.16/78,687.66 = 31,875.52/x
  3. Step 3: Cross multiply
    57,021.16x = 78,687.66 × 31,875.52
  4. Step 4: Simplify right side
    57,021.16x = 2,508,210,080.08
  5. Step 5: Solve for x
    x = 2,508,210,080.08/57,021.16
  6. Step 6: Final answer
    x = 43,987.36

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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.