Home / 78,467.13-108,284.72-42,657.03

Finding the Fourth Proportional to 78,467.13, 108,284.72 and 42,657.03

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Solution

The fourth proportional to 78,467.13, 108,284.72 and 42,657.03 is: 58,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,467.13 : 108,284.72 = 42,657.03 : x
  2. Step 2: Convert to fraction form
    78,467.13/108,284.72 = 42,657.03/x
  3. Step 3: Cross multiply
    78,467.13x = 108,284.72 × 42,657.03
  4. Step 4: Simplify right side
    78,467.13x = 4,619,104,336.30
  5. Step 5: Solve for x
    x = 4,619,104,336.30/78,467.13
  6. Step 6: Final answer
    x = 58,866.74

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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.