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Finding the Fourth Proportional to 112,069.76, 154,656.32 and 63,671.77

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Solution

The fourth proportional to 112,069.76, 154,656.32 and 63,671.77 is: 87,867.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,069.76 : 154,656.32 = 63,671.77 : x
  2. Step 2: Convert to fraction form
    112,069.76/154,656.32 = 63,671.77/x
  3. Step 3: Cross multiply
    112,069.76x = 154,656.32 × 63,671.77
  4. Step 4: Simplify right side
    112,069.76x = 9,847,241,408.63
  5. Step 5: Solve for x
    x = 9,847,241,408.63/112,069.76
  6. Step 6: Final answer
    x = 87,867.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.