Home / 74,122.40-102,288.98-40,130.91

Finding the Fourth Proportional to 74,122.40, 102,288.98 and 40,130.91

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Solution

The fourth proportional to 74,122.40, 102,288.98 and 40,130.91 is: 55,380.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,122.40 : 102,288.98 = 40,130.91 : x
  2. Step 2: Convert to fraction form
    74,122.40/102,288.98 = 40,130.91/x
  3. Step 3: Cross multiply
    74,122.40x = 102,288.98 × 40,130.91
  4. Step 4: Simplify right side
    74,122.40x = 4,104,949,850.37
  5. Step 5: Solve for x
    x = 4,104,949,850.37/74,122.40
  6. Step 6: Final answer
    x = 55,380.69

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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.