Home / 85,219.90-117,612.21-51,239.46

Finding the Fourth Proportional to 85,219.90, 117,612.21 and 51,239.46

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Solution

The fourth proportional to 85,219.90, 117,612.21 and 51,239.46 is: 70,715.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,219.90 : 117,612.21 = 51,239.46 : x
  2. Step 2: Convert to fraction form
    85,219.90/117,612.21 = 51,239.46/x
  3. Step 3: Cross multiply
    85,219.90x = 117,612.21 × 51,239.46
  4. Step 4: Simplify right side
    85,219.90x = 6,026,386,129.81
  5. Step 5: Solve for x
    x = 6,026,386,129.81/85,219.90
  6. Step 6: Final answer
    x = 70,715.71

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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.