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Finding the Fourth Proportional to 65,805.90, 98,686.77 and 21,422.22

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Solution

The fourth proportional to 65,805.90, 98,686.77 and 21,422.22 is: 32,126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,805.90 : 98,686.77 = 21,422.22 : x
  2. Step 2: Convert to fraction form
    65,805.90/98,686.77 = 21,422.22/x
  3. Step 3: Cross multiply
    65,805.90x = 98,686.77 × 21,422.22
  4. Step 4: Simplify right side
    65,805.90x = 2,114,089,698.03
  5. Step 5: Solve for x
    x = 2,114,089,698.03/65,805.90
  6. Step 6: Final answer
    x = 32,126.14

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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.