Home / 78,173.13-117,281.58-25,619.52

Finding the Fourth Proportional to 78,173.13, 117,281.58 and 25,619.52

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Solution

The fourth proportional to 78,173.13, 117,281.58 and 25,619.52 is: 38,436.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,173.13 : 117,281.58 = 25,619.52 : x
  2. Step 2: Convert to fraction form
    78,173.13/117,281.58 = 25,619.52/x
  3. Step 3: Cross multiply
    78,173.13x = 117,281.58 × 25,619.52
  4. Step 4: Simplify right side
    78,173.13x = 3,004,697,784.44
  5. Step 5: Solve for x
    x = 3,004,697,784.44/78,173.13
  6. Step 6: Final answer
    x = 38,436.45

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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.