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Finding the Fourth Proportional to 69,703.72, 96,220.56 and 47,073.40

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Solution

The fourth proportional to 69,703.72, 96,220.56 and 47,073.40 is: 64,981.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,703.72 : 96,220.56 = 47,073.40 : x
  2. Step 2: Convert to fraction form
    69,703.72/96,220.56 = 47,073.40/x
  3. Step 3: Cross multiply
    69,703.72x = 96,220.56 × 47,073.40
  4. Step 4: Simplify right side
    69,703.72x = 4,529,428,909.10
  5. Step 5: Solve for x
    x = 4,529,428,909.10/69,703.72
  6. Step 6: Final answer
    x = 64,981.16

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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.