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Finding the Fourth Proportional to 56,933.80, 85,400.70 and 39,219.10

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Solution

The fourth proportional to 56,933.80, 85,400.70 and 39,219.10 is: 58,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,933.80 : 85,400.70 = 39,219.10 : x
  2. Step 2: Convert to fraction form
    56,933.80/85,400.70 = 39,219.10/x
  3. Step 3: Cross multiply
    56,933.80x = 85,400.70 × 39,219.10
  4. Step 4: Simplify right side
    56,933.80x = 3,349,338,593.37
  5. Step 5: Solve for x
    x = 3,349,338,593.37/56,933.80
  6. Step 6: Final answer
    x = 58,828.65

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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.