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Finding the Fourth Proportional to 69,077.70, 103,616.55 and 67,541.70

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Solution

The fourth proportional to 69,077.70, 103,616.55 and 67,541.70 is: 101,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,077.70 : 103,616.55 = 67,541.70 : x
  2. Step 2: Convert to fraction form
    69,077.70/103,616.55 = 67,541.70/x
  3. Step 3: Cross multiply
    69,077.70x = 103,616.55 × 67,541.70
  4. Step 4: Simplify right side
    69,077.70x = 6,998,437,935.14
  5. Step 5: Solve for x
    x = 6,998,437,935.14/69,077.70
  6. Step 6: Final answer
    x = 101,312.55

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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.