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Finding the Fourth Proportional to 83,130.69, 124,590.90 and 53,133.37

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Solution

The fourth proportional to 83,130.69, 124,590.90 and 53,133.37 is: 79,632.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,130.69 : 124,590.90 = 53,133.37 : x
  2. Step 2: Convert to fraction form
    83,130.69/124,590.90 = 53,133.37/x
  3. Step 3: Cross multiply
    83,130.69x = 124,590.90 × 53,133.37
  4. Step 4: Simplify right side
    83,130.69x = 6,619,934,388.33
  5. Step 5: Solve for x
    x = 6,619,934,388.33/83,130.69
  6. Step 6: Final answer
    x = 79,632.86

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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.