Home / 78,619.02-108,600.39-62,814.30

Finding the Fourth Proportional to 78,619.02, 108,600.39 and 62,814.30

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Solution

The fourth proportional to 78,619.02, 108,600.39 and 62,814.30 is: 86,768.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,619.02 : 108,600.39 = 62,814.30 : x
  2. Step 2: Convert to fraction form
    78,619.02/108,600.39 = 62,814.30/x
  3. Step 3: Cross multiply
    78,619.02x = 108,600.39 × 62,814.30
  4. Step 4: Simplify right side
    78,619.02x = 6,821,657,477.58
  5. Step 5: Solve for x
    x = 6,821,657,477.58/78,619.02
  6. Step 6: Final answer
    x = 86,768.54

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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.