Home / 78,290.01-117,497.32-28,384.36

Finding the Fourth Proportional to 78,290.01, 117,497.32 and 28,384.36

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Solution

The fourth proportional to 78,290.01, 117,497.32 and 28,384.36 is: 42,599.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,290.01 : 117,497.32 = 28,384.36 : x
  2. Step 2: Convert to fraction form
    78,290.01/117,497.32 = 28,384.36/x
  3. Step 3: Cross multiply
    78,290.01x = 117,497.32 × 28,384.36
  4. Step 4: Simplify right side
    78,290.01x = 3,335,085,865.21
  5. Step 5: Solve for x
    x = 3,335,085,865.21/78,290.01
  6. Step 6: Final answer
    x = 42,599.12

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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.