Home / 77,889.90-116,834.80-18,725.55

Finding the Fourth Proportional to 77,889.90, 116,834.80 and 18,725.55

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Solution

The fourth proportional to 77,889.90, 116,834.80 and 18,725.55 is: 28,088.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,889.90 : 116,834.80 = 18,725.55 : x
  2. Step 2: Convert to fraction form
    77,889.90/116,834.80 = 18,725.55/x
  3. Step 3: Cross multiply
    77,889.90x = 116,834.80 × 18,725.55
  4. Step 4: Simplify right side
    77,889.90x = 2,187,795,889.14
  5. Step 5: Solve for x
    x = 2,187,795,889.14/77,889.90
  6. Step 6: Final answer
    x = 28,088.31

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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.