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Finding the Fourth Proportional to 78,550.68, 117,808.27 and 22,389.58

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Solution

The fourth proportional to 78,550.68, 117,808.27 and 22,389.58 is: 33,579.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,550.68 : 117,808.27 = 22,389.58 : x
  2. Step 2: Convert to fraction form
    78,550.68/117,808.27 = 22,389.58/x
  3. Step 3: Cross multiply
    78,550.68x = 117,808.27 × 22,389.58
  4. Step 4: Simplify right side
    78,550.68x = 2,637,677,335.33
  5. Step 5: Solve for x
    x = 2,637,677,335.33/78,550.68
  6. Step 6: Final answer
    x = 33,579.31

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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.