Home / 78,291.32-117,436.58-19,127.32

Finding the Fourth Proportional to 78,291.32, 117,436.58 and 19,127.32

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Solution

The fourth proportional to 78,291.32, 117,436.58 and 19,127.32 is: 28,690.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,291.32 : 117,436.58 = 19,127.32 : x
  2. Step 2: Convert to fraction form
    78,291.32/117,436.58 = 19,127.32/x
  3. Step 3: Cross multiply
    78,291.32x = 117,436.58 × 19,127.32
  4. Step 4: Simplify right side
    78,291.32x = 2,246,247,045.37
  5. Step 5: Solve for x
    x = 2,246,247,045.37/78,291.32
  6. Step 6: Final answer
    x = 28,690.88

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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.