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Finding the Fourth Proportional to 86,080.70, 118,790.91 and 47,319.42

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Solution

The fourth proportional to 86,080.70, 118,790.91 and 47,319.42 is: 65,300.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,080.70 : 118,790.91 = 47,319.42 : x
  2. Step 2: Convert to fraction form
    86,080.70/118,790.91 = 47,319.42/x
  3. Step 3: Cross multiply
    86,080.70x = 118,790.91 × 47,319.42
  4. Step 4: Simplify right side
    86,080.70x = 5,621,116,962.47
  5. Step 5: Solve for x
    x = 5,621,116,962.47/86,080.70
  6. Step 6: Final answer
    x = 65,300.55

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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.