Home / 78,528.74-117,725.07-31,751.24

Finding the Fourth Proportional to 78,528.74, 117,725.07 and 31,751.24

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Solution

The fourth proportional to 78,528.74, 117,725.07 and 31,751.24 is: 47,599.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,528.74 : 117,725.07 = 31,751.24 : x
  2. Step 2: Convert to fraction form
    78,528.74/117,725.07 = 31,751.24/x
  3. Step 3: Cross multiply
    78,528.74x = 117,725.07 × 31,751.24
  4. Step 4: Simplify right side
    78,528.74x = 3,737,917,364.97
  5. Step 5: Solve for x
    x = 3,737,917,364.97/78,528.74
  6. Step 6: Final answer
    x = 47,599.35

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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.