Home / 68,981.64-103,603.74-42,868.86

Finding the Fourth Proportional to 68,981.64, 103,603.74 and 42,868.86

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Solution

The fourth proportional to 68,981.64, 103,603.74 and 42,868.86 is: 64,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,981.64 : 103,603.74 = 42,868.86 : x
  2. Step 2: Convert to fraction form
    68,981.64/103,603.74 = 42,868.86/x
  3. Step 3: Cross multiply
    68,981.64x = 103,603.74 × 42,868.86
  4. Step 4: Simplify right side
    68,981.64x = 4,441,374,225.54
  5. Step 5: Solve for x
    x = 4,441,374,225.54/68,981.64
  6. Step 6: Final answer
    x = 64,384.87

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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.