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Finding the Fourth Proportional to 76,015.80, 104,901.10 and 42,026.40

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Solution

The fourth proportional to 76,015.80, 104,901.10 and 42,026.40 is: 57,996.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,015.80 : 104,901.10 = 42,026.40 : x
  2. Step 2: Convert to fraction form
    76,015.80/104,901.10 = 42,026.40/x
  3. Step 3: Cross multiply
    76,015.80x = 104,901.10 × 42,026.40
  4. Step 4: Simplify right side
    76,015.80x = 4,408,615,589.04
  5. Step 5: Solve for x
    x = 4,408,615,589.04/76,015.80
  6. Step 6: Final answer
    x = 57,996.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.