Home / 85,639.35-118,179.86-47,400.47

Finding the Fourth Proportional to 85,639.35, 118,179.86 and 47,400.47

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Solution

The fourth proportional to 85,639.35, 118,179.86 and 47,400.47 is: 65,411.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,639.35 : 118,179.86 = 47,400.47 : x
  2. Step 2: Convert to fraction form
    85,639.35/118,179.86 = 47,400.47/x
  3. Step 3: Cross multiply
    85,639.35x = 118,179.86 × 47,400.47
  4. Step 4: Simplify right side
    85,639.35x = 5,601,780,436.14
  5. Step 5: Solve for x
    x = 5,601,780,436.14/85,639.35
  6. Step 6: Final answer
    x = 65,411.29

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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.