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Finding the Fourth Proportional to 85,788.98, 128,651.88 and 29,614.76

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Solution

The fourth proportional to 85,788.98, 128,651.88 and 29,614.76 is: 44,411.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,788.98 : 128,651.88 = 29,614.76 : x
  2. Step 2: Convert to fraction form
    85,788.98/128,651.88 = 29,614.76/x
  3. Step 3: Cross multiply
    85,788.98x = 128,651.88 × 29,614.76
  4. Step 4: Simplify right side
    85,788.98x = 3,809,994,549.75
  5. Step 5: Solve for x
    x = 3,809,994,549.75/85,788.98
  6. Step 6: Final answer
    x = 44,411.23

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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.