Home / 81,047.15-111,840.51-45,239.46

Finding the Fourth Proportional to 81,047.15, 111,840.51 and 45,239.46

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Solution

The fourth proportional to 81,047.15, 111,840.51 and 45,239.46 is: 62,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,047.15 : 111,840.51 = 45,239.46 : x
  2. Step 2: Convert to fraction form
    81,047.15/111,840.51 = 45,239.46/x
  3. Step 3: Cross multiply
    81,047.15x = 111,840.51 × 45,239.46
  4. Step 4: Simplify right side
    81,047.15x = 5,059,604,278.52
  5. Step 5: Solve for x
    x = 5,059,604,278.52/81,047.15
  6. Step 6: Final answer
    x = 62,427.91

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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.