Home / 51,572.12-77,362.14-21,990.11

Finding the Fourth Proportional to 51,572.12, 77,362.14 and 21,990.11

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Solution

The fourth proportional to 51,572.12, 77,362.14 and 21,990.11 is: 32,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,572.12 : 77,362.14 = 21,990.11 : x
  2. Step 2: Convert to fraction form
    51,572.12/77,362.14 = 21,990.11/x
  3. Step 3: Cross multiply
    51,572.12x = 77,362.14 × 21,990.11
  4. Step 4: Simplify right side
    51,572.12x = 1,701,201,968.44
  5. Step 5: Solve for x
    x = 1,701,201,968.44/51,572.12
  6. Step 6: Final answer
    x = 32,986.85

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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.