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Finding the Fourth Proportional to 71,581.51, 98,810.04 and 47,699.47

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Solution

The fourth proportional to 71,581.51, 98,810.04 and 47,699.47 is: 65,843.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,581.51 : 98,810.04 = 47,699.47 : x
  2. Step 2: Convert to fraction form
    71,581.51/98,810.04 = 47,699.47/x
  3. Step 3: Cross multiply
    71,581.51x = 98,810.04 × 47,699.47
  4. Step 4: Simplify right side
    71,581.51x = 4,713,186,538.68
  5. Step 5: Solve for x
    x = 4,713,186,538.68/71,581.51
  6. Step 6: Final answer
    x = 65,843.63

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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.