Home / 74,018.37-102,155.09-42,179.97

Finding the Fourth Proportional to 74,018.37, 102,155.09 and 42,179.97

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Solution

The fourth proportional to 74,018.37, 102,155.09 and 42,179.97 is: 58,213.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,018.37 : 102,155.09 = 42,179.97 : x
  2. Step 2: Convert to fraction form
    74,018.37/102,155.09 = 42,179.97/x
  3. Step 3: Cross multiply
    74,018.37x = 102,155.09 × 42,179.97
  4. Step 4: Simplify right side
    74,018.37x = 4,308,898,420.65
  5. Step 5: Solve for x
    x = 4,308,898,420.65/74,018.37
  6. Step 6: Final answer
    x = 58,213.91

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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.