Home / 74,130.09-102,299.33-40,138.61

Finding the Fourth Proportional to 74,130.09, 102,299.33 and 40,138.61

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Solution

The fourth proportional to 74,130.09, 102,299.33 and 40,138.61 is: 55,391.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,130.09 : 102,299.33 = 40,138.61 : x
  2. Step 2: Convert to fraction form
    74,130.09/102,299.33 = 40,138.61/x
  3. Step 3: Cross multiply
    74,130.09x = 102,299.33 × 40,138.61
  4. Step 4: Simplify right side
    74,130.09x = 4,106,152,498.98
  5. Step 5: Solve for x
    x = 4,106,152,498.98/74,130.09
  6. Step 6: Final answer
    x = 55,391.17

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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.