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Finding the Fourth Proportional to 60,221.79, 90,415.44 and 30,659.49

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Solution

The fourth proportional to 60,221.79, 90,415.44 and 30,659.49 is: 46,031.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,221.79 : 90,415.44 = 30,659.49 : x
  2. Step 2: Convert to fraction form
    60,221.79/90,415.44 = 30,659.49/x
  3. Step 3: Cross multiply
    60,221.79x = 90,415.44 × 30,659.49
  4. Step 4: Simplify right side
    60,221.79x = 2,772,091,278.53
  5. Step 5: Solve for x
    x = 2,772,091,278.53/60,221.79
  6. Step 6: Final answer
    x = 46,031.37

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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.