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Finding the Fourth Proportional to 69,068.79, 103,603.17 and 45,689.76

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Solution

The fourth proportional to 69,068.79, 103,603.17 and 45,689.76 is: 68,534.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,068.79 : 103,603.17 = 45,689.76 : x
  2. Step 2: Convert to fraction form
    69,068.79/103,603.17 = 45,689.76/x
  3. Step 3: Cross multiply
    69,068.79x = 103,603.17 × 45,689.76
  4. Step 4: Simplify right side
    69,068.79x = 4,733,603,972.54
  5. Step 5: Solve for x
    x = 4,733,603,972.54/69,068.79
  6. Step 6: Final answer
    x = 68,534.63

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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.