Home / 74,405.25-102,686.13-40,877.73

Finding the Fourth Proportional to 74,405.25, 102,686.13 and 40,877.73

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Solution

The fourth proportional to 74,405.25, 102,686.13 and 40,877.73 is: 56,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,405.25 : 102,686.13 = 40,877.73 : x
  2. Step 2: Convert to fraction form
    74,405.25/102,686.13 = 40,877.73/x
  3. Step 3: Cross multiply
    74,405.25x = 102,686.13 × 40,877.73
  4. Step 4: Simplify right side
    74,405.25x = 4,197,575,896.88
  5. Step 5: Solve for x
    x = 4,197,575,896.88/74,405.25
  6. Step 6: Final answer
    x = 56,415.05

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1.5x scale

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.