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Finding the Fourth Proportional to 71,703.50, 98,953.65 and 39,441.12

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Solution

The fourth proportional to 71,703.50, 98,953.65 and 39,441.12 is: 54,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,703.50 : 98,953.65 = 39,441.12 : x
  2. Step 2: Convert to fraction form
    71,703.50/98,953.65 = 39,441.12/x
  3. Step 3: Cross multiply
    71,703.50x = 98,953.65 × 39,441.12
  4. Step 4: Simplify right side
    71,703.50x = 3,902,842,784.09
  5. Step 5: Solve for x
    x = 3,902,842,784.09/71,703.50
  6. Step 6: Final answer
    x = 54,430.30

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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.