Home / 85,619.04-118,147.86-47,886

Finding the Fourth Proportional to 85,619.04, 118,147.86 and 47,886

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Solution

The fourth proportional to 85,619.04, 118,147.86 and 47,886 is: 66,079.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,619.04 : 118,147.86 = 47,886 : x
  2. Step 2: Convert to fraction form
    85,619.04/118,147.86 = 47,886/x
  3. Step 3: Cross multiply
    85,619.04x = 118,147.86 × 47,886
  4. Step 4: Simplify right side
    85,619.04x = 5,657,628,423.96
  5. Step 5: Solve for x
    x = 5,657,628,423.96/85,619.04
  6. Step 6: Final answer
    x = 66,079.09

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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.