Home / 83,923.86-115,788.80-47,619.30

Finding the Fourth Proportional to 83,923.86, 115,788.80 and 47,619.30

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Solution

The fourth proportional to 83,923.86, 115,788.80 and 47,619.30 is: 65,699.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,923.86 : 115,788.80 = 47,619.30 : x
  2. Step 2: Convert to fraction form
    83,923.86/115,788.80 = 47,619.30/x
  3. Step 3: Cross multiply
    83,923.86x = 115,788.80 × 47,619.30
  4. Step 4: Simplify right side
    83,923.86x = 5,513,781,603.84
  5. Step 5: Solve for x
    x = 5,513,781,603.84/83,923.86
  6. Step 6: Final answer
    x = 65,699.81

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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.