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Finding the Fourth Proportional to 86,127.69, 118,852.50 and 47,887.20

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Solution

The fourth proportional to 86,127.69, 118,852.50 and 47,887.20 is: 66,082.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,127.69 : 118,852.50 = 47,887.20 : x
  2. Step 2: Convert to fraction form
    86,127.69/118,852.50 = 47,887.20/x
  3. Step 3: Cross multiply
    86,127.69x = 118,852.50 × 47,887.20
  4. Step 4: Simplify right side
    86,127.69x = 5,691,513,438
  5. Step 5: Solve for x
    x = 5,691,513,438/86,127.69
  6. Step 6: Final answer
    x = 66,082.27

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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.