Home / 78,682.14-108,582.60-42,872.16

Finding the Fourth Proportional to 78,682.14, 108,582.60 and 42,872.16

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Solution

The fourth proportional to 78,682.14, 108,582.60 and 42,872.16 is: 59,164.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,682.14 : 108,582.60 = 42,872.16 : x
  2. Step 2: Convert to fraction form
    78,682.14/108,582.60 = 42,872.16/x
  3. Step 3: Cross multiply
    78,682.14x = 108,582.60 × 42,872.16
  4. Step 4: Simplify right side
    78,682.14x = 4,655,170,600.42
  5. Step 5: Solve for x
    x = 4,655,170,600.42/78,682.14
  6. Step 6: Final answer
    x = 59,164.26

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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.