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Finding the Fourth Proportional to 70,177.80, 105,341.64 and 30,216.56

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Solution

The fourth proportional to 70,177.80, 105,341.64 and 30,216.56 is: 45,357.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,177.80 : 105,341.64 = 30,216.56 : x
  2. Step 2: Convert to fraction form
    70,177.80/105,341.64 = 30,216.56/x
  3. Step 3: Cross multiply
    70,177.80x = 105,341.64 × 30,216.56
  4. Step 4: Simplify right side
    70,177.80x = 3,183,061,985.56
  5. Step 5: Solve for x
    x = 3,183,061,985.56/70,177.80
  6. Step 6: Final answer
    x = 45,357.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.