Home / 65,570.04-98,378.10-21,198.60

Finding the Fourth Proportional to 65,570.04, 98,378.10 and 21,198.60

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Solution

The fourth proportional to 65,570.04, 98,378.10 and 21,198.60 is: 31,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,570.04 : 98,378.10 = 21,198.60 : x
  2. Step 2: Convert to fraction form
    65,570.04/98,378.10 = 21,198.60/x
  3. Step 3: Cross multiply
    65,570.04x = 98,378.10 × 21,198.60
  4. Step 4: Simplify right side
    65,570.04x = 2,085,477,990.66
  5. Step 5: Solve for x
    x = 2,085,477,990.66/65,570.04
  6. Step 6: Final answer
    x = 31,805.35

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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.