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Finding the Fourth Proportional to 86,090.92, 118,802.72 and 47,850.28

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Solution

The fourth proportional to 86,090.92, 118,802.72 and 47,850.28 is: 66,031.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,090.92 : 118,802.72 = 47,850.28 : x
  2. Step 2: Convert to fraction form
    86,090.92/118,802.72 = 47,850.28/x
  3. Step 3: Cross multiply
    86,090.92x = 118,802.72 × 47,850.28
  4. Step 4: Simplify right side
    86,090.92x = 5,684,743,416.76
  5. Step 5: Solve for x
    x = 5,684,743,416.76/86,090.92
  6. Step 6: Final answer
    x = 66,031.86

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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.