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Finding the Fourth Proportional to 86,102.99, 118,823.55 and 47,342.45

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Solution

The fourth proportional to 86,102.99, 118,823.55 and 47,342.45 is: 65,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,102.99 : 118,823.55 = 47,342.45 : x
  2. Step 2: Convert to fraction form
    86,102.99/118,823.55 = 47,342.45/x
  3. Step 3: Cross multiply
    86,102.99x = 118,823.55 × 47,342.45
  4. Step 4: Simplify right side
    86,102.99x = 5,625,397,380.58
  5. Step 5: Solve for x
    x = 5,625,397,380.58/86,102.99
  6. Step 6: Final answer
    x = 65,333.36

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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.