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Finding the Fourth Proportional to 71,703.59, 98,953.37 and 39,439.56

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Solution

The fourth proportional to 71,703.59, 98,953.37 and 39,439.56 is: 54,427.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,703.59 : 98,953.37 = 39,439.56 : x
  2. Step 2: Convert to fraction form
    71,703.59/98,953.37 = 39,439.56/x
  3. Step 3: Cross multiply
    71,703.59x = 98,953.37 × 39,439.56
  4. Step 4: Simplify right side
    71,703.59x = 3,902,677,176.12
  5. Step 5: Solve for x
    x = 3,902,677,176.12/71,703.59
  6. Step 6: Final answer
    x = 54,427.92

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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.