Home / 74,140.78-102,314.28-40,606.78

Finding the Fourth Proportional to 74,140.78, 102,314.28 and 40,606.78

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Solution

The fourth proportional to 74,140.78, 102,314.28 and 40,606.78 is: 56,037.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,140.78 : 102,314.28 = 40,606.78 : x
  2. Step 2: Convert to fraction form
    74,140.78/102,314.28 = 40,606.78/x
  3. Step 3: Cross multiply
    74,140.78x = 102,314.28 × 40,606.78
  4. Step 4: Simplify right side
    74,140.78x = 4,154,653,458.82
  5. Step 5: Solve for x
    x = 4,154,653,458.82/74,140.78
  6. Step 6: Final answer
    x = 56,037.36

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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.