Home / 74,020.20-111,030.30-72,270.60

Finding the Fourth Proportional to 74,020.20, 111,030.30 and 72,270.60

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Solution

The fourth proportional to 74,020.20, 111,030.30 and 72,270.60 is: 108,405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,020.20 : 111,030.30 = 72,270.60 : x
  2. Step 2: Convert to fraction form
    74,020.20/111,030.30 = 72,270.60/x
  3. Step 3: Cross multiply
    74,020.20x = 111,030.30 × 72,270.60
  4. Step 4: Simplify right side
    74,020.20x = 8,024,226,399.18
  5. Step 5: Solve for x
    x = 8,024,226,399.18/74,020.20
  6. Step 6: Final answer
    x = 108,405.90

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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.