Home / 78,045.26-116,965.82-31,330.94

Finding the Fourth Proportional to 78,045.26, 116,965.82 and 31,330.94

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Solution

The fourth proportional to 78,045.26, 116,965.82 and 31,330.94 is: 46,955.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,045.26 : 116,965.82 = 31,330.94 : x
  2. Step 2: Convert to fraction form
    78,045.26/116,965.82 = 31,330.94/x
  3. Step 3: Cross multiply
    78,045.26x = 116,965.82 × 31,330.94
  4. Step 4: Simplify right side
    78,045.26x = 3,664,649,088.47
  5. Step 5: Solve for x
    x = 3,664,649,088.47/78,045.26
  6. Step 6: Final answer
    x = 46,955.43

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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.