Home / 78,746.70-117,988.56-55,331.22

Finding the Fourth Proportional to 78,746.70, 117,988.56 and 55,331.22

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Solution

The fourth proportional to 78,746.70, 117,988.56 and 55,331.22 is: 82,904.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,746.70 : 117,988.56 = 55,331.22 : x
  2. Step 2: Convert to fraction form
    78,746.70/117,988.56 = 55,331.22/x
  3. Step 3: Cross multiply
    78,746.70x = 117,988.56 × 55,331.22
  4. Step 4: Simplify right side
    78,746.70x = 6,528,450,970.84
  5. Step 5: Solve for x
    x = 6,528,450,970.84/78,746.70
  6. Step 6: Final answer
    x = 82,904.44

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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.