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Finding the Fourth Proportional to 51,396.59, 77,124.04 and 20,253.71

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Solution

The fourth proportional to 51,396.59, 77,124.04 and 20,253.71 is: 30,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,396.59 : 77,124.04 = 20,253.71 : x
  2. Step 2: Convert to fraction form
    51,396.59/77,124.04 = 20,253.71/x
  3. Step 3: Cross multiply
    51,396.59x = 77,124.04 × 20,253.71
  4. Step 4: Simplify right side
    51,396.59x = 1,562,047,940.19
  5. Step 5: Solve for x
    x = 1,562,047,940.19/51,396.59
  6. Step 6: Final answer
    x = 30,392.05

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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.