Home / 78,439.34-108,246.97-42,629.36

Finding the Fourth Proportional to 78,439.34, 108,246.97 and 42,629.36

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Solution

The fourth proportional to 78,439.34, 108,246.97 and 42,629.36 is: 58,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,439.34 : 108,246.97 = 42,629.36 : x
  2. Step 2: Convert to fraction form
    78,439.34/108,246.97 = 42,629.36/x
  3. Step 3: Cross multiply
    78,439.34x = 108,246.97 × 42,629.36
  4. Step 4: Simplify right side
    78,439.34x = 4,614,499,053.04
  5. Step 5: Solve for x
    x = 4,614,499,053.04/78,439.34
  6. Step 6: Final answer
    x = 58,828.89

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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.