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Finding the Fourth Proportional to 70,335.87, 105,507.05 and 39,147.63

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Solution

The fourth proportional to 70,335.87, 105,507.05 and 39,147.63 is: 58,723.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,335.87 : 105,507.05 = 39,147.63 : x
  2. Step 2: Convert to fraction form
    70,335.87/105,507.05 = 39,147.63/x
  3. Step 3: Cross multiply
    70,335.87x = 105,507.05 × 39,147.63
  4. Step 4: Simplify right side
    70,335.87x = 4,130,350,760.05
  5. Step 5: Solve for x
    x = 4,130,350,760.05/70,335.87
  6. Step 6: Final answer
    x = 58,723.25

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1.5x scale

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.