Home / 78,420.79-117,565.06-34,014.10

Finding the Fourth Proportional to 78,420.79, 117,565.06 and 34,014.10

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Solution

The fourth proportional to 78,420.79, 117,565.06 and 34,014.10 is: 50,992.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,420.79 : 117,565.06 = 34,014.10 : x
  2. Step 2: Convert to fraction form
    78,420.79/117,565.06 = 34,014.10/x
  3. Step 3: Cross multiply
    78,420.79x = 117,565.06 × 34,014.10
  4. Step 4: Simplify right side
    78,420.79x = 3,998,869,328.40
  5. Step 5: Solve for x
    x = 3,998,869,328.40/78,420.79
  6. Step 6: Final answer
    x = 50,992.47

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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.