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Finding the Fourth Proportional to 52,700.60, 79,064.40 and 30,474.20

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Solution

The fourth proportional to 52,700.60, 79,064.40 and 30,474.20 is: 45,719.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,700.60 : 79,064.40 = 30,474.20 : x
  2. Step 2: Convert to fraction form
    52,700.60/79,064.40 = 30,474.20/x
  3. Step 3: Cross multiply
    52,700.60x = 79,064.40 × 30,474.20
  4. Step 4: Simplify right side
    52,700.60x = 2,409,424,338.48
  5. Step 5: Solve for x
    x = 2,409,424,338.48/52,700.60
  6. Step 6: Final answer
    x = 45,719.11

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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.