Home / 78,328.16-117,467.36-25,725.40

Finding the Fourth Proportional to 78,328.16, 117,467.36 and 25,725.40

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Solution

The fourth proportional to 78,328.16, 117,467.36 and 25,725.40 is: 38,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,328.16 : 117,467.36 = 25,725.40 : x
  2. Step 2: Convert to fraction form
    78,328.16/117,467.36 = 25,725.40/x
  3. Step 3: Cross multiply
    78,328.16x = 117,467.36 × 25,725.40
  4. Step 4: Simplify right side
    78,328.16x = 3,021,894,822.94
  5. Step 5: Solve for x
    x = 3,021,894,822.94/78,328.16
  6. Step 6: Final answer
    x = 38,579.93

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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.