Home / 85,308.06-117,727.65-47,581.50

Finding the Fourth Proportional to 85,308.06, 117,727.65 and 47,581.50

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Solution

The fourth proportional to 85,308.06, 117,727.65 and 47,581.50 is: 65,663.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,308.06 : 117,727.65 = 47,581.50 : x
  2. Step 2: Convert to fraction form
    85,308.06/117,727.65 = 47,581.50/x
  3. Step 3: Cross multiply
    85,308.06x = 117,727.65 × 47,581.50
  4. Step 4: Simplify right side
    85,308.06x = 5,601,658,178.48
  5. Step 5: Solve for x
    x = 5,601,658,178.48/85,308.06
  6. Step 6: Final answer
    x = 65,663.88

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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.