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Finding the Fourth Proportional to 57,398.58, 79,285.32 and 39,462.48

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Solution

The fourth proportional to 57,398.58, 79,285.32 and 39,462.48 is: 54,509.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,398.58 : 79,285.32 = 39,462.48 : x
  2. Step 2: Convert to fraction form
    57,398.58/79,285.32 = 39,462.48/x
  3. Step 3: Cross multiply
    57,398.58x = 79,285.32 × 39,462.48
  4. Step 4: Simplify right side
    57,398.58x = 3,128,795,354.79
  5. Step 5: Solve for x
    x = 3,128,795,354.79/57,398.58
  6. Step 6: Final answer
    x = 54,509.98

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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.