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Finding the Fourth Proportional to 71,054.76, 105,999.66 and 69,124.14

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Solution

The fourth proportional to 71,054.76, 105,999.66 and 69,124.14 is: 103,119.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,054.76 : 105,999.66 = 69,124.14 : x
  2. Step 2: Convert to fraction form
    71,054.76/105,999.66 = 69,124.14/x
  3. Step 3: Cross multiply
    71,054.76x = 105,999.66 × 69,124.14
  4. Step 4: Simplify right side
    71,054.76x = 7,327,135,337.79
  5. Step 5: Solve for x
    x = 7,327,135,337.79/71,054.76
  6. Step 6: Final answer
    x = 103,119.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.