Home / 86,128.36-118,856.10-48,409

Finding the Fourth Proportional to 86,128.36, 118,856.10 and 48,409

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Solution

The fourth proportional to 86,128.36, 118,856.10 and 48,409 is: 66,803.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,128.36 : 118,856.10 = 48,409 : x
  2. Step 2: Convert to fraction form
    86,128.36/118,856.10 = 48,409/x
  3. Step 3: Cross multiply
    86,128.36x = 118,856.10 × 48,409
  4. Step 4: Simplify right side
    86,128.36x = 5,753,704,944.90
  5. Step 5: Solve for x
    x = 5,753,704,944.90/86,128.36
  6. Step 6: Final answer
    x = 66,803.84

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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.