Home / 85,742.10-118,328.31-51,750

Finding the Fourth Proportional to 85,742.10, 118,328.31 and 51,750

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Solution

The fourth proportional to 85,742.10, 118,328.31 and 51,750 is: 71,417.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,742.10 : 118,328.31 = 51,750 : x
  2. Step 2: Convert to fraction form
    85,742.10/118,328.31 = 51,750/x
  3. Step 3: Cross multiply
    85,742.10x = 118,328.31 × 51,750
  4. Step 4: Simplify right side
    85,742.10x = 6,123,490,042.50
  5. Step 5: Solve for x
    x = 6,123,490,042.50/85,742.10
  6. Step 6: Final answer
    x = 71,417.54

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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.