Home / 78,175.14-117,284.58-25,621.52

Finding the Fourth Proportional to 78,175.14, 117,284.58 and 25,621.52

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Solution

The fourth proportional to 78,175.14, 117,284.58 and 25,621.52 is: 38,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,175.14 : 117,284.58 = 25,621.52 : x
  2. Step 2: Convert to fraction form
    78,175.14/117,284.58 = 25,621.52/x
  3. Step 3: Cross multiply
    78,175.14x = 117,284.58 × 25,621.52
  4. Step 4: Simplify right side
    78,175.14x = 3,005,009,212.16
  5. Step 5: Solve for x
    x = 3,005,009,212.16/78,175.14
  6. Step 6: Final answer
    x = 38,439.45

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1.5x scale

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.