Home / 58,778.42-81,139.04-39,684.06

Finding the Fourth Proportional to 58,778.42, 81,139.04 and 39,684.06

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Solution

The fourth proportional to 58,778.42, 81,139.04 and 39,684.06 is: 54,780.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,778.42 : 81,139.04 = 39,684.06 : x
  2. Step 2: Convert to fraction form
    58,778.42/81,139.04 = 39,684.06/x
  3. Step 3: Cross multiply
    58,778.42x = 81,139.04 × 39,684.06
  4. Step 4: Simplify right side
    58,778.42x = 3,219,925,927.59
  5. Step 5: Solve for x
    x = 3,219,925,927.59/58,778.42
  6. Step 6: Final answer
    x = 54,780.75

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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.