Home / 78,133.72-107,822.32-45,867.82

Finding the Fourth Proportional to 78,133.72, 107,822.32 and 45,867.82

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Solution

The fourth proportional to 78,133.72, 107,822.32 and 45,867.82 is: 63,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133.72 : 107,822.32 = 45,867.82 : x
  2. Step 2: Convert to fraction form
    78,133.72/107,822.32 = 45,867.82/x
  3. Step 3: Cross multiply
    78,133.72x = 107,822.32 × 45,867.82
  4. Step 4: Simplify right side
    78,133.72x = 4,945,575,184.11
  5. Step 5: Solve for x
    x = 4,945,575,184.11/78,133.72
  6. Step 6: Final answer
    x = 63,296.30

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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.