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Finding the Fourth Proportional to 86,142.84, 118,864.26 and 48,409.80

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Solution

The fourth proportional to 86,142.84, 118,864.26 and 48,409.80 is: 66,798.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,142.84 : 118,864.26 = 48,409.80 : x
  2. Step 2: Convert to fraction form
    86,142.84/118,864.26 = 48,409.80/x
  3. Step 3: Cross multiply
    86,142.84x = 118,864.26 × 48,409.80
  4. Step 4: Simplify right side
    86,142.84x = 5,754,195,053.75
  5. Step 5: Solve for x
    x = 5,754,195,053.75/86,142.84
  6. Step 6: Final answer
    x = 66,798.30

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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.