Home / 85,630.32-118,170.16-47,904.56

Finding the Fourth Proportional to 85,630.32, 118,170.16 and 47,904.56

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Solution

The fourth proportional to 85,630.32, 118,170.16 and 47,904.56 is: 66,108.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,630.32 : 118,170.16 = 47,904.56 : x
  2. Step 2: Convert to fraction form
    85,630.32/118,170.16 = 47,904.56/x
  3. Step 3: Cross multiply
    85,630.32x = 118,170.16 × 47,904.56
  4. Step 4: Simplify right side
    85,630.32x = 5,660,889,519.93
  5. Step 5: Solve for x
    x = 5,660,889,519.93/85,630.32
  6. Step 6: Final answer
    x = 66,108.47

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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.