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Finding the Fourth Proportional to 70,665.60, 97,518.20 and 40,450.75

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Solution

The fourth proportional to 70,665.60, 97,518.20 and 40,450.75 is: 55,821.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,665.60 : 97,518.20 = 40,450.75 : x
  2. Step 2: Convert to fraction form
    70,665.60/97,518.20 = 40,450.75/x
  3. Step 3: Cross multiply
    70,665.60x = 97,518.20 × 40,450.75
  4. Step 4: Simplify right side
    70,665.60x = 3,944,684,328.65
  5. Step 5: Solve for x
    x = 3,944,684,328.65/70,665.60
  6. Step 6: Final answer
    x = 55,821.85

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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.