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Finding the Fourth Proportional to 65,959.74, 98,918.55 and 21,574.53

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Solution

The fourth proportional to 65,959.74, 98,918.55 and 21,574.53 is: 32,354.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,959.74 : 98,918.55 = 21,574.53 : x
  2. Step 2: Convert to fraction form
    65,959.74/98,918.55 = 21,574.53/x
  3. Step 3: Cross multiply
    65,959.74x = 98,918.55 × 21,574.53
  4. Step 4: Simplify right side
    65,959.74x = 2,134,121,224.53
  5. Step 5: Solve for x
    x = 2,134,121,224.53/65,959.74
  6. Step 6: Final answer
    x = 32,354.91

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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.