Home / 85,639.36-118,182.42-47,913.64

Finding the Fourth Proportional to 85,639.36, 118,182.42 and 47,913.64

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Solution

The fourth proportional to 85,639.36, 118,182.42 and 47,913.64 is: 66,120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,639.36 : 118,182.42 = 47,913.64 : x
  2. Step 2: Convert to fraction form
    85,639.36/118,182.42 = 47,913.64/x
  3. Step 3: Cross multiply
    85,639.36x = 118,182.42 × 47,913.64
  4. Step 4: Simplify right side
    85,639.36x = 5,662,549,926.21
  5. Step 5: Solve for x
    x = 5,662,549,926.21/85,639.36
  6. Step 6: Final answer
    x = 66,120.88

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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.