Home / 69,030.20-103,559.70-39,423.80

Finding the Fourth Proportional to 69,030.20, 103,559.70 and 39,423.80

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Solution

The fourth proportional to 69,030.20, 103,559.70 and 39,423.80 is: 59,143.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,030.20 : 103,559.70 = 39,423.80 : x
  2. Step 2: Convert to fraction form
    69,030.20/103,559.70 = 39,423.80/x
  3. Step 3: Cross multiply
    69,030.20x = 103,559.70 × 39,423.80
  4. Step 4: Simplify right side
    69,030.20x = 4,082,716,900.86
  5. Step 5: Solve for x
    x = 4,082,716,900.86/69,030.20
  6. Step 6: Final answer
    x = 59,143.92

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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.