Home / 76,447.20-105,476.40-42,912.48

Finding the Fourth Proportional to 76,447.20, 105,476.40 and 42,912.48

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Solution

The fourth proportional to 76,447.20, 105,476.40 and 42,912.48 is: 59,207.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,447.20 : 105,476.40 = 42,912.48 : x
  2. Step 2: Convert to fraction form
    76,447.20/105,476.40 = 42,912.48/x
  3. Step 3: Cross multiply
    76,447.20x = 105,476.40 × 42,912.48
  4. Step 4: Simplify right side
    76,447.20x = 4,526,253,905.47
  5. Step 5: Solve for x
    x = 4,526,253,905.47/76,447.20
  6. Step 6: Final answer
    x = 59,207.58

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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.