Home / 85,342.89-117,772.32-47,102.79

Finding the Fourth Proportional to 85,342.89, 117,772.32 and 47,102.79

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Solution

The fourth proportional to 85,342.89, 117,772.32 and 47,102.79 is: 65,001.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,342.89 : 117,772.32 = 47,102.79 : x
  2. Step 2: Convert to fraction form
    85,342.89/117,772.32 = 47,102.79/x
  3. Step 3: Cross multiply
    85,342.89x = 117,772.32 × 47,102.79
  4. Step 4: Simplify right side
    85,342.89x = 5,547,404,856.77
  5. Step 5: Solve for x
    x = 5,547,404,856.77/85,342.89
  6. Step 6: Final answer
    x = 65,001.37

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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.