Home / 78,386.40-117,599.85-34,002.99

Finding the Fourth Proportional to 78,386.40, 117,599.85 and 34,002.99

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Solution

The fourth proportional to 78,386.40, 117,599.85 and 34,002.99 is: 51,013.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,386.40 : 117,599.85 = 34,002.99 : x
  2. Step 2: Convert to fraction form
    78,386.40/117,599.85 = 34,002.99/x
  3. Step 3: Cross multiply
    78,386.40x = 117,599.85 × 34,002.99
  4. Step 4: Simplify right side
    78,386.40x = 3,998,746,523.55
  5. Step 5: Solve for x
    x = 3,998,746,523.55/78,386.40
  6. Step 6: Final answer
    x = 51,013.27

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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.