Home / 74,103.12-102,262.32-40,569.12

Finding the Fourth Proportional to 74,103.12, 102,262.32 and 40,569.12

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Solution

The fourth proportional to 74,103.12, 102,262.32 and 40,569.12 is: 55,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,103.12 : 102,262.32 = 40,569.12 : x
  2. Step 2: Convert to fraction form
    74,103.12/102,262.32 = 40,569.12/x
  3. Step 3: Cross multiply
    74,103.12x = 102,262.32 × 40,569.12
  4. Step 4: Simplify right side
    74,103.12x = 4,148,692,331.56
  5. Step 5: Solve for x
    x = 4,148,692,331.56/74,103.12
  6. Step 6: Final answer
    x = 55,985.39

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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.