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Finding the Fourth Proportional to 86,100.06, 118,818 and 47,858.40

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Solution

The fourth proportional to 86,100.06, 118,818 and 47,858.40 is: 66,044.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,100.06 : 118,818 = 47,858.40 : x
  2. Step 2: Convert to fraction form
    86,100.06/118,818 = 47,858.40/x
  3. Step 3: Cross multiply
    86,100.06x = 118,818 × 47,858.40
  4. Step 4: Simplify right side
    86,100.06x = 5,686,439,371.20
  5. Step 5: Solve for x
    x = 5,686,439,371.20/86,100.06
  6. Step 6: Final answer
    x = 66,044.55

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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.