Home / 78,031.84-117,059.91-25,429.12

Finding the Fourth Proportional to 78,031.84, 117,059.91 and 25,429.12

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Solution

The fourth proportional to 78,031.84, 117,059.91 and 25,429.12 is: 38,147.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,031.84 : 117,059.91 = 25,429.12 : x
  2. Step 2: Convert to fraction form
    78,031.84/117,059.91 = 25,429.12/x
  3. Step 3: Cross multiply
    78,031.84x = 117,059.91 × 25,429.12
  4. Step 4: Simplify right side
    78,031.84x = 2,976,730,498.58
  5. Step 5: Solve for x
    x = 2,976,730,498.58/78,031.84
  6. Step 6: Final answer
    x = 38,147.64

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1.5x scale

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.