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Finding the Fourth Proportional to 70,904.67, 97,847.19 and 38,639.57

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Solution

The fourth proportional to 70,904.67, 97,847.19 and 38,639.57 is: 53,321.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,904.67 : 97,847.19 = 38,639.57 : x
  2. Step 2: Convert to fraction form
    70,904.67/97,847.19 = 38,639.57/x
  3. Step 3: Cross multiply
    70,904.67x = 97,847.19 × 38,639.57
  4. Step 4: Simplify right side
    70,904.67x = 3,780,773,347.31
  5. Step 5: Solve for x
    x = 3,780,773,347.31/70,904.67
  6. Step 6: Final answer
    x = 53,321.92

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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.