Home / 52,485.40-78,728.70-13,042.60

Finding the Fourth Proportional to 52,485.40, 78,728.70 and 13,042.60

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Solution

The fourth proportional to 52,485.40, 78,728.70 and 13,042.60 is: 19,564.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,485.40 : 78,728.70 = 13,042.60 : x
  2. Step 2: Convert to fraction form
    52,485.40/78,728.70 = 13,042.60/x
  3. Step 3: Cross multiply
    52,485.40x = 78,728.70 × 13,042.60
  4. Step 4: Simplify right side
    52,485.40x = 1,026,826,942.62
  5. Step 5: Solve for x
    x = 1,026,826,942.62/52,485.40
  6. Step 6: Final answer
    x = 19,564.05

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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.