Home / 78,384.56-108,171.52-42,575.26

Finding the Fourth Proportional to 78,384.56, 108,171.52 and 42,575.26

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Solution

The fourth proportional to 78,384.56, 108,171.52 and 42,575.26 is: 58,754.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,384.56 : 108,171.52 = 42,575.26 : x
  2. Step 2: Convert to fraction form
    78,384.56/108,171.52 = 42,575.26/x
  3. Step 3: Cross multiply
    78,384.56x = 108,171.52 × 42,575.26
  4. Step 4: Simplify right side
    78,384.56x = 4,605,430,588.60
  5. Step 5: Solve for x
    x = 4,605,430,588.60/78,384.56
  6. Step 6: Final answer
    x = 58,754.31

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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.