Home / 40,686.10-61,068.60-19,640.98

Finding the Fourth Proportional to 40,686.10, 61,068.60 and 19,640.98

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Solution

The fourth proportional to 40,686.10, 61,068.60 and 19,640.98 is: 29,480.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,686.10 : 61,068.60 = 19,640.98 : x
  2. Step 2: Convert to fraction form
    40,686.10/61,068.60 = 19,640.98/x
  3. Step 3: Cross multiply
    40,686.10x = 61,068.60 × 19,640.98
  4. Step 4: Simplify right side
    40,686.10x = 1,199,447,227.56
  5. Step 5: Solve for x
    x = 1,199,447,227.56/40,686.10
  6. Step 6: Final answer
    x = 29,480.52

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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.