Home / 85,619.54-118,148.55-47,886.50

Finding the Fourth Proportional to 85,619.54, 118,148.55 and 47,886.50

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Solution

The fourth proportional to 85,619.54, 118,148.55 and 47,886.50 is: 66,079.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,619.54 : 118,148.55 = 47,886.50 : x
  2. Step 2: Convert to fraction form
    85,619.54/118,148.55 = 47,886.50/x
  3. Step 3: Cross multiply
    85,619.54x = 118,148.55 × 47,886.50
  4. Step 4: Simplify right side
    85,619.54x = 5,657,720,539.58
  5. Step 5: Solve for x
    x = 5,657,720,539.58/85,619.54
  6. Step 6: Final answer
    x = 66,079.78

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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.