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Finding the Fourth Proportional to 86,116.88, 118,843.40 and 48,390.16

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Solution

The fourth proportional to 86,116.88, 118,843.40 and 48,390.16 is: 66,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,116.88 : 118,843.40 = 48,390.16 : x
  2. Step 2: Convert to fraction form
    86,116.88/118,843.40 = 48,390.16/x
  3. Step 3: Cross multiply
    86,116.88x = 118,843.40 × 48,390.16
  4. Step 4: Simplify right side
    86,116.88x = 5,750,851,140.94
  5. Step 5: Solve for x
    x = 5,750,851,140.94/86,116.88
  6. Step 6: Final answer
    x = 66,779.60

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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.