Home / 85,869.09-118,500.57-51,872.86

Finding the Fourth Proportional to 85,869.09, 118,500.57 and 51,872.86

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Solution

The fourth proportional to 85,869.09, 118,500.57 and 51,872.86 is: 71,585.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,869.09 : 118,500.57 = 51,872.86 : x
  2. Step 2: Convert to fraction form
    85,869.09/118,500.57 = 51,872.86/x
  3. Step 3: Cross multiply
    85,869.09x = 118,500.57 × 51,872.86
  4. Step 4: Simplify right side
    85,869.09x = 6,146,963,477.53
  5. Step 5: Solve for x
    x = 6,146,963,477.53/85,869.09
  6. Step 6: Final answer
    x = 71,585.29

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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.