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Finding the Fourth Proportional to 73,074.57, 100,859.76 and 42,869.60

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Solution

The fourth proportional to 73,074.57, 100,859.76 and 42,869.60 is: 59,169.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,074.57 : 100,859.76 = 42,869.60 : x
  2. Step 2: Convert to fraction form
    73,074.57/100,859.76 = 42,869.60/x
  3. Step 3: Cross multiply
    73,074.57x = 100,859.76 × 42,869.60
  4. Step 4: Simplify right side
    73,074.57x = 4,323,817,099.24
  5. Step 5: Solve for x
    x = 4,323,817,099.24/73,074.57
  6. Step 6: Final answer
    x = 59,169.93

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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.