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Finding the Fourth Proportional to 88,692.10, 133,038.15 and 72,945.70

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Solution

The fourth proportional to 88,692.10, 133,038.15 and 72,945.70 is: 109,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,692.10 : 133,038.15 = 72,945.70 : x
  2. Step 2: Convert to fraction form
    88,692.10/133,038.15 = 72,945.70/x
  3. Step 3: Cross multiply
    88,692.10x = 133,038.15 × 72,945.70
  4. Step 4: Simplify right side
    88,692.10x = 9,704,560,978.46
  5. Step 5: Solve for x
    x = 9,704,560,978.46/88,692.10
  6. Step 6: Final answer
    x = 109,418.55

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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.