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Finding the Fourth Proportional to 85,974.88, 128,920.84 and 36,041.58

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Solution

The fourth proportional to 85,974.88, 128,920.84 and 36,041.58 is: 54,044.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,974.88 : 128,920.84 = 36,041.58 : x
  2. Step 2: Convert to fraction form
    85,974.88/128,920.84 = 36,041.58/x
  3. Step 3: Cross multiply
    85,974.88x = 128,920.84 × 36,041.58
  4. Step 4: Simplify right side
    85,974.88x = 4,646,510,768.53
  5. Step 5: Solve for x
    x = 4,646,510,768.53/85,974.88
  6. Step 6: Final answer
    x = 54,044.98

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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.