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Finding the Fourth Proportional to 70,247.50, 96,941.64 and 39,620.99

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Solution

The fourth proportional to 70,247.50, 96,941.64 and 39,620.99 is: 54,677.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,247.50 : 96,941.64 = 39,620.99 : x
  2. Step 2: Convert to fraction form
    70,247.50/96,941.64 = 39,620.99/x
  3. Step 3: Cross multiply
    70,247.50x = 96,941.64 × 39,620.99
  4. Step 4: Simplify right side
    70,247.50x = 3,840,924,139.96
  5. Step 5: Solve for x
    x = 3,840,924,139.96/70,247.50
  6. Step 6: Final answer
    x = 54,677.02

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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.