Home / 78,330.44-108,096.15-42,520.47

Finding the Fourth Proportional to 78,330.44, 108,096.15 and 42,520.47

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Solution

The fourth proportional to 78,330.44, 108,096.15 and 42,520.47 is: 58,678.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.44 : 108,096.15 = 42,520.47 : x
  2. Step 2: Convert to fraction form
    78,330.44/108,096.15 = 42,520.47/x
  3. Step 3: Cross multiply
    78,330.44x = 108,096.15 × 42,520.47
  4. Step 4: Simplify right side
    78,330.44x = 4,596,299,103.19
  5. Step 5: Solve for x
    x = 4,596,299,103.19/78,330.44
  6. Step 6: Final answer
    x = 58,678.33

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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.