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Finding the Fourth Proportional to 71,703.95, 98,953.86 and 39,441.06

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Solution

The fourth proportional to 71,703.95, 98,953.86 and 39,441.06 is: 54,429.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,703.95 : 98,953.86 = 39,441.06 : x
  2. Step 2: Convert to fraction form
    71,703.95/98,953.86 = 39,441.06/x
  3. Step 3: Cross multiply
    71,703.95x = 98,953.86 × 39,441.06
  4. Step 4: Simplify right side
    71,703.95x = 3,902,845,129.49
  5. Step 5: Solve for x
    x = 3,902,845,129.49/71,703.95
  6. Step 6: Final answer
    x = 54,429.99

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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.