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Finding the Fourth Proportional to 70,705.65, 97,571.30 and 38,874.30

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Solution

The fourth proportional to 70,705.65, 97,571.30 and 38,874.30 is: 53,645.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,705.65 : 97,571.30 = 38,874.30 : x
  2. Step 2: Convert to fraction form
    70,705.65/97,571.30 = 38,874.30/x
  3. Step 3: Cross multiply
    70,705.65x = 97,571.30 × 38,874.30
  4. Step 4: Simplify right side
    70,705.65x = 3,793,015,987.59
  5. Step 5: Solve for x
    x = 3,793,015,987.59/70,705.65
  6. Step 6: Final answer
    x = 53,645.16

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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.