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Finding the Fourth Proportional to 78,041.80, 117,005.10 and 33,632.20

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Solution

The fourth proportional to 78,041.80, 117,005.10 and 33,632.20 is: 50,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,041.80 : 117,005.10 = 33,632.20 : x
  2. Step 2: Convert to fraction form
    78,041.80/117,005.10 = 33,632.20/x
  3. Step 3: Cross multiply
    78,041.80x = 117,005.10 × 33,632.20
  4. Step 4: Simplify right side
    78,041.80x = 3,935,138,924.22
  5. Step 5: Solve for x
    x = 3,935,138,924.22/78,041.80
  6. Step 6: Final answer
    x = 50,423.48

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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.