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Finding the Fourth Proportional to 65,894.61, 98,851.58 and 20,900.96

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Solution

The fourth proportional to 65,894.61, 98,851.58 and 20,900.96 is: 31,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,894.61 : 98,851.58 = 20,900.96 : x
  2. Step 2: Convert to fraction form
    65,894.61/98,851.58 = 20,900.96/x
  3. Step 3: Cross multiply
    65,894.61x = 98,851.58 × 20,900.96
  4. Step 4: Simplify right side
    65,894.61x = 2,066,092,919.52
  5. Step 5: Solve for x
    x = 2,066,092,919.52/65,894.61
  6. Step 6: Final answer
    x = 31,354.51

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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.