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Finding the Fourth Proportional to 79,454.40, 119,246.40 and 76,862.40

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Solution

The fourth proportional to 79,454.40, 119,246.40 and 76,862.40 is: 115,356.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,454.40 : 119,246.40 = 76,862.40 : x
  2. Step 2: Convert to fraction form
    79,454.40/119,246.40 = 76,862.40/x
  3. Step 3: Cross multiply
    79,454.40x = 119,246.40 × 76,862.40
  4. Step 4: Simplify right side
    79,454.40x = 9,165,564,495.36
  5. Step 5: Solve for x
    x = 9,165,564,495.36/79,454.40
  6. Step 6: Final answer
    x = 115,356.29

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1.5x scale

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.