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Finding the Fourth Proportional to 60,316.35, 90,480.73 and 20,873.40

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Solution

The fourth proportional to 60,316.35, 90,480.73 and 20,873.40 is: 31,312.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,316.35 : 90,480.73 = 20,873.40 : x
  2. Step 2: Convert to fraction form
    60,316.35/90,480.73 = 20,873.40/x
  3. Step 3: Cross multiply
    60,316.35x = 90,480.73 × 20,873.40
  4. Step 4: Simplify right side
    60,316.35x = 1,888,640,469.58
  5. Step 5: Solve for x
    x = 1,888,640,469.58/60,316.35
  6. Step 6: Final answer
    x = 31,312.25

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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.