Home / 74,509-111,768.98-21,920.76

Finding the Fourth Proportional to 74,509, 111,768.98 and 21,920.76

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Solution

The fourth proportional to 74,509, 111,768.98 and 21,920.76 is: 32,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,509 : 111,768.98 = 21,920.76 : x
  2. Step 2: Convert to fraction form
    74,509/111,768.98 = 21,920.76/x
  3. Step 3: Cross multiply
    74,509x = 111,768.98 × 21,920.76
  4. Step 4: Simplify right side
    74,509x = 2,450,060,986.02
  5. Step 5: Solve for x
    x = 2,450,060,986.02/74,509
  6. Step 6: Final answer
    x = 32,882.75

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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.