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Finding the Fourth Proportional to 61,344, 84,653.91 and 34,119.90

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Solution

The fourth proportional to 61,344, 84,653.91 and 34,119.90 is: 47,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,344 : 84,653.91 = 34,119.90 : x
  2. Step 2: Convert to fraction form
    61,344/84,653.91 = 34,119.90/x
  3. Step 3: Cross multiply
    61,344x = 84,653.91 × 34,119.90
  4. Step 4: Simplify right side
    61,344x = 2,888,382,943.81
  5. Step 5: Solve for x
    x = 2,888,382,943.81/61,344
  6. Step 6: Final answer
    x = 47,085.01

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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.