Home / 78,396.60-108,159.06-46,564.80

Finding the Fourth Proportional to 78,396.60, 108,159.06 and 46,564.80

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Solution

The fourth proportional to 78,396.60, 108,159.06 and 46,564.80 is: 64,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,396.60 : 108,159.06 = 46,564.80 : x
  2. Step 2: Convert to fraction form
    78,396.60/108,159.06 = 46,564.80/x
  3. Step 3: Cross multiply
    78,396.60x = 108,159.06 × 46,564.80
  4. Step 4: Simplify right side
    78,396.60x = 5,036,404,997.09
  5. Step 5: Solve for x
    x = 5,036,404,997.09/78,396.60
  6. Step 6: Final answer
    x = 64,242.65

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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.