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Finding the Fourth Proportional to 89,738.60, 134,607.90 and 52,340.90

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Solution

The fourth proportional to 89,738.60, 134,607.90 and 52,340.90 is: 78,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,738.60 : 134,607.90 = 52,340.90 : x
  2. Step 2: Convert to fraction form
    89,738.60/134,607.90 = 52,340.90/x
  3. Step 3: Cross multiply
    89,738.60x = 134,607.90 × 52,340.90
  4. Step 4: Simplify right side
    89,738.60x = 7,045,498,633.11
  5. Step 5: Solve for x
    x = 7,045,498,633.11/89,738.60
  6. Step 6: Final answer
    x = 78,511.35

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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.