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Finding the Fourth Proportional to 65,987.44, 98,977.92 and 21,608.34

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Solution

The fourth proportional to 65,987.44, 98,977.92 and 21,608.34 is: 32,411.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,987.44 : 98,977.92 = 21,608.34 : x
  2. Step 2: Convert to fraction form
    65,987.44/98,977.92 = 21,608.34/x
  3. Step 3: Cross multiply
    65,987.44x = 98,977.92 × 21,608.34
  4. Step 4: Simplify right side
    65,987.44x = 2,138,748,547.85
  5. Step 5: Solve for x
    x = 2,138,748,547.85/65,987.44
  6. Step 6: Final answer
    x = 32,411.45

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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.