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Finding the Fourth Proportional to 64,370.68, 88,830 and 35,690.20

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Solution

The fourth proportional to 64,370.68, 88,830 and 35,690.20 is: 49,251.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,370.68 : 88,830 = 35,690.20 : x
  2. Step 2: Convert to fraction form
    64,370.68/88,830 = 35,690.20/x
  3. Step 3: Cross multiply
    64,370.68x = 88,830 × 35,690.20
  4. Step 4: Simplify right side
    64,370.68x = 3,170,360,466.00
  5. Step 5: Solve for x
    x = 3,170,360,466.00/64,370.68
  6. Step 6: Final answer
    x = 49,251.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.