Home / 58,778.58-81,139.26-39,684.21

Finding the Fourth Proportional to 58,778.58, 81,139.26 and 39,684.21

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Solution

The fourth proportional to 58,778.58, 81,139.26 and 39,684.21 is: 54,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,778.58 : 81,139.26 = 39,684.21 : x
  2. Step 2: Convert to fraction form
    58,778.58/81,139.26 = 39,684.21/x
  3. Step 3: Cross multiply
    58,778.58x = 81,139.26 × 39,684.21
  4. Step 4: Simplify right side
    58,778.58x = 3,219,947,433.08
  5. Step 5: Solve for x
    x = 3,219,947,433.08/58,778.58
  6. Step 6: Final answer
    x = 54,780.97

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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.