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Finding the Fourth Proportional to 65,554.84, 98,335.95 and 18,806.50

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Solution

The fourth proportional to 65,554.84, 98,335.95 and 18,806.50 is: 28,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,554.84 : 98,335.95 = 18,806.50 : x
  2. Step 2: Convert to fraction form
    65,554.84/98,335.95 = 18,806.50/x
  3. Step 3: Cross multiply
    65,554.84x = 98,335.95 × 18,806.50
  4. Step 4: Simplify right side
    65,554.84x = 1,849,355,043.68
  5. Step 5: Solve for x
    x = 1,849,355,043.68/65,554.84
  6. Step 6: Final answer
    x = 28,210.81

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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.