Home / 58,885.90-81,231-40,949.78

Finding the Fourth Proportional to 58,885.90, 81,231 and 40,949.78

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Solution

The fourth proportional to 58,885.90, 81,231 and 40,949.78 is: 56,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,885.90 : 81,231 = 40,949.78 : x
  2. Step 2: Convert to fraction form
    58,885.90/81,231 = 40,949.78/x
  3. Step 3: Cross multiply
    58,885.90x = 81,231 × 40,949.78
  4. Step 4: Simplify right side
    58,885.90x = 3,326,391,579.18
  5. Step 5: Solve for x
    x = 3,326,391,579.18/58,885.90
  6. Step 6: Final answer
    x = 56,488.76

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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.