Home / 51,621.84-77,364.72-20,440.08

Finding the Fourth Proportional to 51,621.84, 77,364.72 and 20,440.08

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Solution

The fourth proportional to 51,621.84, 77,364.72 and 20,440.08 is: 30,633.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,621.84 : 77,364.72 = 20,440.08 : x
  2. Step 2: Convert to fraction form
    51,621.84/77,364.72 = 20,440.08/x
  3. Step 3: Cross multiply
    51,621.84x = 77,364.72 × 20,440.08
  4. Step 4: Simplify right side
    51,621.84x = 1,581,341,065.98
  5. Step 5: Solve for x
    x = 1,581,341,065.98/51,621.84
  6. Step 6: Final answer
    x = 30,633.18

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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.