Home / 84,083.04-125,943.60-39,643.20

Finding the Fourth Proportional to 84,083.04, 125,943.60 and 39,643.20

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Solution

The fourth proportional to 84,083.04, 125,943.60 and 39,643.20 is: 59,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,083.04 : 125,943.60 = 39,643.20 : x
  2. Step 2: Convert to fraction form
    84,083.04/125,943.60 = 39,643.20/x
  3. Step 3: Cross multiply
    84,083.04x = 125,943.60 × 39,643.20
  4. Step 4: Simplify right side
    84,083.04x = 4,992,807,323.52
  5. Step 5: Solve for x
    x = 4,992,807,323.52/84,083.04
  6. Step 6: Final answer
    x = 59,379.48

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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.