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Finding the Fourth Proportional to 75,656.34, 104,406.03 and 42,122.34

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Solution

The fourth proportional to 75,656.34, 104,406.03 and 42,122.34 is: 58,128.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,656.34 : 104,406.03 = 42,122.34 : x
  2. Step 2: Convert to fraction form
    75,656.34/104,406.03 = 42,122.34/x
  3. Step 3: Cross multiply
    75,656.34x = 104,406.03 × 42,122.34
  4. Step 4: Simplify right side
    75,656.34x = 4,397,826,293.71
  5. Step 5: Solve for x
    x = 4,397,826,293.71/75,656.34
  6. Step 6: Final answer
    x = 58,128.99

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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.