Home / 77,280.10-115,920.15-32,908.30

Finding the Fourth Proportional to 77,280.10, 115,920.15 and 32,908.30

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Solution

The fourth proportional to 77,280.10, 115,920.15 and 32,908.30 is: 49,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,280.10 : 115,920.15 = 32,908.30 : x
  2. Step 2: Convert to fraction form
    77,280.10/115,920.15 = 32,908.30/x
  3. Step 3: Cross multiply
    77,280.10x = 115,920.15 × 32,908.30
  4. Step 4: Simplify right side
    77,280.10x = 3,814,735,072.25
  5. Step 5: Solve for x
    x = 3,814,735,072.25/77,280.10
  6. Step 6: Final answer
    x = 49,362.45

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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.