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Finding the Fourth Proportional to 60,504.39, 90,749.30 and 21,058.20

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Solution

The fourth proportional to 60,504.39, 90,749.30 and 21,058.20 is: 31,584.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,504.39 : 90,749.30 = 21,058.20 : x
  2. Step 2: Convert to fraction form
    60,504.39/90,749.30 = 21,058.20/x
  3. Step 3: Cross multiply
    60,504.39x = 90,749.30 × 21,058.20
  4. Step 4: Simplify right side
    60,504.39x = 1,911,016,803.97
  5. Step 5: Solve for x
    x = 1,911,016,803.97/60,504.39
  6. Step 6: Final answer
    x = 31,584.76

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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.