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Finding the Fourth Proportional to 115,779, 159,775.02 and 62,787

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Solution

The fourth proportional to 115,779, 159,775.02 and 62,787 is: 86,646.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,779 : 159,775.02 = 62,787 : x
  2. Step 2: Convert to fraction form
    115,779/159,775.02 = 62,787/x
  3. Step 3: Cross multiply
    115,779x = 159,775.02 × 62,787
  4. Step 4: Simplify right side
    115,779x = 10,031,794,180.74
  5. Step 5: Solve for x
    x = 10,031,794,180.74/115,779
  6. Step 6: Final answer
    x = 86,646.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.