Home / 58,777.08-81,137.20-39,682.71

Finding the Fourth Proportional to 58,777.08, 81,137.20 and 39,682.71

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Solution

The fourth proportional to 58,777.08, 81,137.20 and 39,682.71 is: 54,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,777.08 : 81,137.20 = 39,682.71 : x
  2. Step 2: Convert to fraction form
    58,777.08/81,137.20 = 39,682.71/x
  3. Step 3: Cross multiply
    58,777.08x = 81,137.20 × 39,682.71
  4. Step 4: Simplify right side
    58,777.08x = 3,219,744,069.60
  5. Step 5: Solve for x
    x = 3,219,744,069.60/58,777.08
  6. Step 6: Final answer
    x = 54,778.90

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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.