Home / 76,421.67-105,456.60-42,427.44

Finding the Fourth Proportional to 76,421.67, 105,456.60 and 42,427.44

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Solution

The fourth proportional to 76,421.67, 105,456.60 and 42,427.44 is: 58,546.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,421.67 : 105,456.60 = 42,427.44 : x
  2. Step 2: Convert to fraction form
    76,421.67/105,456.60 = 42,427.44/x
  3. Step 3: Cross multiply
    76,421.67x = 105,456.60 × 42,427.44
  4. Step 4: Simplify right side
    76,421.67x = 4,474,253,569.10
  5. Step 5: Solve for x
    x = 4,474,253,569.10/76,421.67
  6. Step 6: Final answer
    x = 58,546.92

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1.5x scale

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.