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Finding the Fourth Proportional to 70,842.75, 97,761.51 and 39,011.91

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Solution

The fourth proportional to 70,842.75, 97,761.51 and 39,011.91 is: 53,835.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,842.75 : 97,761.51 = 39,011.91 : x
  2. Step 2: Convert to fraction form
    70,842.75/97,761.51 = 39,011.91/x
  3. Step 3: Cross multiply
    70,842.75x = 97,761.51 × 39,011.91
  4. Step 4: Simplify right side
    70,842.75x = 3,813,863,229.58
  5. Step 5: Solve for x
    x = 3,813,863,229.58/70,842.75
  6. Step 6: Final answer
    x = 53,835.62

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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.