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Finding the Fourth Proportional to 65,959.20, 98,869.08 and 21,574.08

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Solution

The fourth proportional to 65,959.20, 98,869.08 and 21,574.08 is: 32,338.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,959.20 : 98,869.08 = 21,574.08 : x
  2. Step 2: Convert to fraction form
    65,959.20/98,869.08 = 21,574.08/x
  3. Step 3: Cross multiply
    65,959.20x = 98,869.08 × 21,574.08
  4. Step 4: Simplify right side
    65,959.20x = 2,133,009,441.45
  5. Step 5: Solve for x
    x = 2,133,009,441.45/65,959.20
  6. Step 6: Final answer
    x = 32,338.32

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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.