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Finding the Fourth Proportional to 70,049.32, 105,073.98 and 30,059.08

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Solution

The fourth proportional to 70,049.32, 105,073.98 and 30,059.08 is: 45,088.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,049.32 : 105,073.98 = 30,059.08 : x
  2. Step 2: Convert to fraction form
    70,049.32/105,073.98 = 30,059.08/x
  3. Step 3: Cross multiply
    70,049.32x = 105,073.98 × 30,059.08
  4. Step 4: Simplify right side
    70,049.32x = 3,158,427,170.74
  5. Step 5: Solve for x
    x = 3,158,427,170.74/70,049.32
  6. Step 6: Final answer
    x = 45,088.62

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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.