Home / 80,916.10-121,330.95-34,116.10

Finding the Fourth Proportional to 80,916.10, 121,330.95 and 34,116.10

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Solution

The fourth proportional to 80,916.10, 121,330.95 and 34,116.10 is: 51,155.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,916.10 : 121,330.95 = 34,116.10 : x
  2. Step 2: Convert to fraction form
    80,916.10/121,330.95 = 34,116.10/x
  3. Step 3: Cross multiply
    80,916.10x = 121,330.95 × 34,116.10
  4. Step 4: Simplify right side
    80,916.10x = 4,139,338,823.30
  5. Step 5: Solve for x
    x = 4,139,338,823.30/80,916.10
  6. Step 6: Final answer
    x = 51,155.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.