Home / 78,054.08-107,685.64-51,211.52

Finding the Fourth Proportional to 78,054.08, 107,685.64 and 51,211.52

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Solution

The fourth proportional to 78,054.08, 107,685.64 and 51,211.52 is: 70,652.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,054.08 : 107,685.64 = 51,211.52 : x
  2. Step 2: Convert to fraction form
    78,054.08/107,685.64 = 51,211.52/x
  3. Step 3: Cross multiply
    78,054.08x = 107,685.64 × 51,211.52
  4. Step 4: Simplify right side
    78,054.08x = 5,514,745,306.57
  5. Step 5: Solve for x
    x = 5,514,745,306.57/78,054.08
  6. Step 6: Final answer
    x = 70,652.88

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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.