Home / 78,633.60-117,953.28-26,047.68

Finding the Fourth Proportional to 78,633.60, 117,953.28 and 26,047.68

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Solution

The fourth proportional to 78,633.60, 117,953.28 and 26,047.68 is: 39,072.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,633.60 : 117,953.28 = 26,047.68 : x
  2. Step 2: Convert to fraction form
    78,633.60/117,953.28 = 26,047.68/x
  3. Step 3: Cross multiply
    78,633.60x = 117,953.28 × 26,047.68
  4. Step 4: Simplify right side
    78,633.60x = 3,072,409,292.39
  5. Step 5: Solve for x
    x = 3,072,409,292.39/78,633.60
  6. Step 6: Final answer
    x = 39,072.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.