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Finding the Fourth Proportional to 66,671.77, 100,023.15 and 19,284.95

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Solution

The fourth proportional to 66,671.77, 100,023.15 and 19,284.95 is: 28,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,671.77 : 100,023.15 = 19,284.95 : x
  2. Step 2: Convert to fraction form
    66,671.77/100,023.15 = 19,284.95/x
  3. Step 3: Cross multiply
    66,671.77x = 100,023.15 × 19,284.95
  4. Step 4: Simplify right side
    66,671.77x = 1,928,941,285.40
  5. Step 5: Solve for x
    x = 1,928,941,285.40/66,671.77
  6. Step 6: Final answer
    x = 28,931.90

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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.