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Finding the Fourth Proportional to 65,328.80, 98,044.40 and 30,272.80

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Solution

The fourth proportional to 65,328.80, 98,044.40 and 30,272.80 is: 45,432.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,328.80 : 98,044.40 = 30,272.80 : x
  2. Step 2: Convert to fraction form
    65,328.80/98,044.40 = 30,272.80/x
  3. Step 3: Cross multiply
    65,328.80x = 98,044.40 × 30,272.80
  4. Step 4: Simplify right side
    65,328.80x = 2,968,078,512.32
  5. Step 5: Solve for x
    x = 2,968,078,512.32/65,328.80
  6. Step 6: Final answer
    x = 45,432.93

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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.