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Finding the Fourth Proportional to 65,710.38, 98,635.74 and 28,289.01

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Solution

The fourth proportional to 65,710.38, 98,635.74 and 28,289.01 is: 42,463.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,710.38 : 98,635.74 = 28,289.01 : x
  2. Step 2: Convert to fraction form
    65,710.38/98,635.74 = 28,289.01/x
  3. Step 3: Cross multiply
    65,710.38x = 98,635.74 × 28,289.01
  4. Step 4: Simplify right side
    65,710.38x = 2,790,307,435.22
  5. Step 5: Solve for x
    x = 2,790,307,435.22/65,710.38
  6. Step 6: Final answer
    x = 42,463.72

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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.