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Finding the Fourth Proportional to 69,688.91, 96,163.76 and 39,468.21

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Solution

The fourth proportional to 69,688.91, 96,163.76 and 39,468.21 is: 54,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,688.91 : 96,163.76 = 39,468.21 : x
  2. Step 2: Convert to fraction form
    69,688.91/96,163.76 = 39,468.21/x
  3. Step 3: Cross multiply
    69,688.91x = 96,163.76 × 39,468.21
  4. Step 4: Simplify right side
    69,688.91x = 3,795,411,531.04
  5. Step 5: Solve for x
    x = 3,795,411,531.04/69,688.91
  6. Step 6: Final answer
    x = 54,462.20

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1.5x scale

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.