Home / 78,403.23-117,451.74-62,641.05

Finding the Fourth Proportional to 78,403.23, 117,451.74 and 62,641.05

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Solution

The fourth proportional to 78,403.23, 117,451.74 and 62,641.05 is: 93,839.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,403.23 : 117,451.74 = 62,641.05 : x
  2. Step 2: Convert to fraction form
    78,403.23/117,451.74 = 62,641.05/x
  3. Step 3: Cross multiply
    78,403.23x = 117,451.74 × 62,641.05
  4. Step 4: Simplify right side
    78,403.23x = 7,357,300,317.93
  5. Step 5: Solve for x
    x = 7,357,300,317.93/78,403.23
  6. Step 6: Final answer
    x = 93,839.25

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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.