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Finding the Fourth Proportional to 86,011.47, 118,699.82 and 47,771.21

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Solution

The fourth proportional to 86,011.47, 118,699.82 and 47,771.21 is: 65,926.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,011.47 : 118,699.82 = 47,771.21 : x
  2. Step 2: Convert to fraction form
    86,011.47/118,699.82 = 47,771.21/x
  3. Step 3: Cross multiply
    86,011.47x = 118,699.82 × 47,771.21
  4. Step 4: Simplify right side
    86,011.47x = 5,670,433,195.83
  5. Step 5: Solve for x
    x = 5,670,433,195.83/86,011.47
  6. Step 6: Final answer
    x = 65,926.48

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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.