Home / 52,419.60-78,629.40-40,741.20

Finding the Fourth Proportional to 52,419.60, 78,629.40 and 40,741.20

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Solution

The fourth proportional to 52,419.60, 78,629.40 and 40,741.20 is: 61,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,419.60 : 78,629.40 = 40,741.20 : x
  2. Step 2: Convert to fraction form
    52,419.60/78,629.40 = 40,741.20/x
  3. Step 3: Cross multiply
    52,419.60x = 78,629.40 × 40,741.20
  4. Step 4: Simplify right side
    52,419.60x = 3,203,456,111.28
  5. Step 5: Solve for x
    x = 3,203,456,111.28/52,419.60
  6. Step 6: Final answer
    x = 61,111.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.