Home / 78,547.11-108,396.12-42,737.15

Finding the Fourth Proportional to 78,547.11, 108,396.12 and 42,737.15

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Solution

The fourth proportional to 78,547.11, 108,396.12 and 42,737.15 is: 58,977.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,547.11 : 108,396.12 = 42,737.15 : x
  2. Step 2: Convert to fraction form
    78,547.11/108,396.12 = 42,737.15/x
  3. Step 3: Cross multiply
    78,547.11x = 108,396.12 × 42,737.15
  4. Step 4: Simplify right side
    78,547.11x = 4,632,540,697.88
  5. Step 5: Solve for x
    x = 4,632,540,697.88/78,547.11
  6. Step 6: Final answer
    x = 58,977.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.