Home / 56,279.71-84,432.05-21,219.67

Finding the Fourth Proportional to 56,279.71, 84,432.05 and 21,219.67

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Solution

The fourth proportional to 56,279.71, 84,432.05 and 21,219.67 is: 31,834.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,279.71 : 84,432.05 = 21,219.67 : x
  2. Step 2: Convert to fraction form
    56,279.71/84,432.05 = 21,219.67/x
  3. Step 3: Cross multiply
    56,279.71x = 84,432.05 × 21,219.67
  4. Step 4: Simplify right side
    56,279.71x = 1,791,620,238.42
  5. Step 5: Solve for x
    x = 1,791,620,238.42/56,279.71
  6. Step 6: Final answer
    x = 31,834.21

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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.