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Finding the Fourth Proportional to 70,157.23, 105,277.36 and 25,815.12

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Solution

The fourth proportional to 70,157.23, 105,277.36 and 25,815.12 is: 38,737.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,157.23 : 105,277.36 = 25,815.12 : x
  2. Step 2: Convert to fraction form
    70,157.23/105,277.36 = 25,815.12/x
  3. Step 3: Cross multiply
    70,157.23x = 105,277.36 × 25,815.12
  4. Step 4: Simplify right side
    70,157.23x = 2,717,747,681.68
  5. Step 5: Solve for x
    x = 2,717,747,681.68/70,157.23
  6. Step 6: Final answer
    x = 38,737.96

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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.