Home / 85,868.59-118,499.88-51,872.36

Finding the Fourth Proportional to 85,868.59, 118,499.88 and 51,872.36

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Solution

The fourth proportional to 85,868.59, 118,499.88 and 51,872.36 is: 71,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,868.59 : 118,499.88 = 51,872.36 : x
  2. Step 2: Convert to fraction form
    85,868.59/118,499.88 = 51,872.36/x
  3. Step 3: Cross multiply
    85,868.59x = 118,499.88 × 51,872.36
  4. Step 4: Simplify right side
    85,868.59x = 6,146,868,435.32
  5. Step 5: Solve for x
    x = 6,146,868,435.32/85,868.59
  6. Step 6: Final answer
    x = 71,584.60

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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.