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Finding the Fourth Proportional to 57,400.99, 79,214.32 and 31,560.63

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Solution

The fourth proportional to 57,400.99, 79,214.32 and 31,560.63 is: 43,554.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,400.99 : 79,214.32 = 31,560.63 : x
  2. Step 2: Convert to fraction form
    57,400.99/79,214.32 = 31,560.63/x
  3. Step 3: Cross multiply
    57,400.99x = 79,214.32 × 31,560.63
  4. Step 4: Simplify right side
    57,400.99x = 2,500,053,686.42
  5. Step 5: Solve for x
    x = 2,500,053,686.42/57,400.99
  6. Step 6: Final answer
    x = 43,554.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.