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Finding the Fourth Proportional to 70,046.32, 105,069.48 and 30,056.08

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Solution

The fourth proportional to 70,046.32, 105,069.48 and 30,056.08 is: 45,084.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,046.32 : 105,069.48 = 30,056.08 : x
  2. Step 2: Convert to fraction form
    70,046.32/105,069.48 = 30,056.08/x
  3. Step 3: Cross multiply
    70,046.32x = 105,069.48 × 30,056.08
  4. Step 4: Simplify right side
    70,046.32x = 3,157,976,696.44
  5. Step 5: Solve for x
    x = 3,157,976,696.44/70,046.32
  6. Step 6: Final answer
    x = 45,084.12

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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.