Home / 78,134.51-107,823.40-45,868.61

Finding the Fourth Proportional to 78,134.51, 107,823.40 and 45,868.61

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Solution

The fourth proportional to 78,134.51, 107,823.40 and 45,868.61 is: 63,297.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,134.51 : 107,823.40 = 45,868.61 : x
  2. Step 2: Convert to fraction form
    78,134.51/107,823.40 = 45,868.61/x
  3. Step 3: Cross multiply
    78,134.51x = 107,823.40 × 45,868.61
  4. Step 4: Simplify right side
    78,134.51x = 4,945,708,715.01
  5. Step 5: Solve for x
    x = 4,945,708,715.01/78,134.51
  6. Step 6: Final answer
    x = 63,297.37

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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.