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Finding the Fourth Proportional to 70,697.50, 97,563.15 and 38,865.70

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Solution

The fourth proportional to 70,697.50, 97,563.15 and 38,865.70 is: 53,635.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,697.50 : 97,563.15 = 38,865.70 : x
  2. Step 2: Convert to fraction form
    70,697.50/97,563.15 = 38,865.70/x
  3. Step 3: Cross multiply
    70,697.50x = 97,563.15 × 38,865.70
  4. Step 4: Simplify right side
    70,697.50x = 3,791,860,118.96
  5. Step 5: Solve for x
    x = 3,791,860,118.96/70,697.50
  6. Step 6: Final answer
    x = 53,635.00

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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.