Home / 82,506.18-113,910.12-56,709.21

Finding the Fourth Proportional to 82,506.18, 113,910.12 and 56,709.21

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Solution

The fourth proportional to 82,506.18, 113,910.12 and 56,709.21 is: 78,294.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,506.18 : 113,910.12 = 56,709.21 : x
  2. Step 2: Convert to fraction form
    82,506.18/113,910.12 = 56,709.21/x
  3. Step 3: Cross multiply
    82,506.18x = 113,910.12 × 56,709.21
  4. Step 4: Simplify right side
    82,506.18x = 6,459,752,916.21
  5. Step 5: Solve for x
    x = 6,459,752,916.21/82,506.18
  6. Step 6: Final answer
    x = 78,294.17

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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.