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Finding the Fourth Proportional to 65,867.04, 98,729.76 and 28,444.80

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Solution

The fourth proportional to 65,867.04, 98,729.76 and 28,444.80 is: 42,636.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,867.04 : 98,729.76 = 28,444.80 : x
  2. Step 2: Convert to fraction form
    65,867.04/98,729.76 = 28,444.80/x
  3. Step 3: Cross multiply
    65,867.04x = 98,729.76 × 28,444.80
  4. Step 4: Simplify right side
    65,867.04x = 2,808,348,277.25
  5. Step 5: Solve for x
    x = 2,808,348,277.25/65,867.04
  6. Step 6: Final answer
    x = 42,636.62

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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.