Home / 78,456.12-117,617.84-34,049.50

Finding the Fourth Proportional to 78,456.12, 117,617.84 and 34,049.50

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Solution

The fourth proportional to 78,456.12, 117,617.84 and 34,049.50 is: 51,045.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,456.12 : 117,617.84 = 34,049.50 : x
  2. Step 2: Convert to fraction form
    78,456.12/117,617.84 = 34,049.50/x
  3. Step 3: Cross multiply
    78,456.12x = 117,617.84 × 34,049.50
  4. Step 4: Simplify right side
    78,456.12x = 4,004,828,643.08
  5. Step 5: Solve for x
    x = 4,004,828,643.08/78,456.12
  6. Step 6: Final answer
    x = 51,045.46

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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.