Home / 51,390.60-77,089.68-21,805.08

Finding the Fourth Proportional to 51,390.60, 77,089.68 and 21,805.08

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Solution

The fourth proportional to 51,390.60, 77,089.68 and 21,805.08 is: 32,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,390.60 : 77,089.68 = 21,805.08 : x
  2. Step 2: Convert to fraction form
    51,390.60/77,089.68 = 21,805.08/x
  3. Step 3: Cross multiply
    51,390.60x = 77,089.68 × 21,805.08
  4. Step 4: Simplify right side
    51,390.60x = 1,680,946,639.57
  5. Step 5: Solve for x
    x = 1,680,946,639.57/51,390.60
  6. Step 6: Final answer
    x = 32,709.22

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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.