Home / 78,629.30-108,646.61-62,844.02

Finding the Fourth Proportional to 78,629.30, 108,646.61 and 62,844.02

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Solution

The fourth proportional to 78,629.30, 108,646.61 and 62,844.02 is: 86,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,629.30 : 108,646.61 = 62,844.02 : x
  2. Step 2: Convert to fraction form
    78,629.30/108,646.61 = 62,844.02/x
  3. Step 3: Cross multiply
    78,629.30x = 108,646.61 × 62,844.02
  4. Step 4: Simplify right side
    78,629.30x = 6,827,789,731.77
  5. Step 5: Solve for x
    x = 6,827,789,731.77/78,629.30
  6. Step 6: Final answer
    x = 86,835.18

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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.