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Finding the Fourth Proportional to 78,809.36, 118,233.72 and 23,405.36

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Solution

The fourth proportional to 78,809.36, 118,233.72 and 23,405.36 is: 35,113.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,809.36 : 118,233.72 = 23,405.36 : x
  2. Step 2: Convert to fraction form
    78,809.36/118,233.72 = 23,405.36/x
  3. Step 3: Cross multiply
    78,809.36x = 118,233.72 × 23,405.36
  4. Step 4: Simplify right side
    78,809.36x = 2,767,302,780.74
  5. Step 5: Solve for x
    x = 2,767,302,780.74/78,809.36
  6. Step 6: Final answer
    x = 35,113.88

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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.