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Finding the Fourth Proportional to 70,353.64, 97,085.78 and 38,520.64

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Solution

The fourth proportional to 70,353.64, 97,085.78 and 38,520.64 is: 53,157.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,353.64 : 97,085.78 = 38,520.64 : x
  2. Step 2: Convert to fraction form
    70,353.64/97,085.78 = 38,520.64/x
  3. Step 3: Cross multiply
    70,353.64x = 97,085.78 × 38,520.64
  4. Step 4: Simplify right side
    70,353.64x = 3,739,806,380.50
  5. Step 5: Solve for x
    x = 3,739,806,380.50/70,353.64
  6. Step 6: Final answer
    x = 53,157.25

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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.