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Finding the Fourth Proportional to 68,762.16, 103,148.52 and 29,319.48

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Solution

The fourth proportional to 68,762.16, 103,148.52 and 29,319.48 is: 43,981.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,762.16 : 103,148.52 = 29,319.48 : x
  2. Step 2: Convert to fraction form
    68,762.16/103,148.52 = 29,319.48/x
  3. Step 3: Cross multiply
    68,762.16x = 103,148.52 × 29,319.48
  4. Step 4: Simplify right side
    68,762.16x = 3,024,260,969.17
  5. Step 5: Solve for x
    x = 3,024,260,969.17/68,762.16
  6. Step 6: Final answer
    x = 43,981.47

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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.