Home / 78,400.23-117,447.24-62,638.05

Finding the Fourth Proportional to 78,400.23, 117,447.24 and 62,638.05

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Solution

The fourth proportional to 78,400.23, 117,447.24 and 62,638.05 is: 93,834.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,400.23 : 117,447.24 = 62,638.05 : x
  2. Step 2: Convert to fraction form
    78,400.23/117,447.24 = 62,638.05/x
  3. Step 3: Cross multiply
    78,400.23x = 117,447.24 × 62,638.05
  4. Step 4: Simplify right side
    78,400.23x = 7,356,666,091.48
  5. Step 5: Solve for x
    x = 7,356,666,091.48/78,400.23
  6. Step 6: Final answer
    x = 93,834.75

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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.