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Finding the Fourth Proportional to 70,310.22, 105,432.51 and 40,736.52

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Solution

The fourth proportional to 70,310.22, 105,432.51 and 40,736.52 is: 61,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,310.22 : 105,432.51 = 40,736.52 : x
  2. Step 2: Convert to fraction form
    70,310.22/105,432.51 = 40,736.52/x
  3. Step 3: Cross multiply
    70,310.22x = 105,432.51 × 40,736.52
  4. Step 4: Simplify right side
    70,310.22x = 4,294,953,552.27
  5. Step 5: Solve for x
    x = 4,294,953,552.27/70,310.22
  6. Step 6: Final answer
    x = 61,085.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.