Home / 51,748.32-77,642.64-20,586.72

Finding the Fourth Proportional to 51,748.32, 77,642.64 and 20,586.72

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Solution

The fourth proportional to 51,748.32, 77,642.64 and 20,586.72 is: 30,888.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,748.32 : 77,642.64 = 20,586.72 : x
  2. Step 2: Convert to fraction form
    51,748.32/77,642.64 = 20,586.72/x
  3. Step 3: Cross multiply
    51,748.32x = 77,642.64 × 20,586.72
  4. Step 4: Simplify right side
    51,748.32x = 1,598,407,289.74
  5. Step 5: Solve for x
    x = 1,598,407,289.74/51,748.32
  6. Step 6: Final answer
    x = 30,888.10

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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.