Home / 74,219.64-102,411.96-42,381.78

Finding the Fourth Proportional to 74,219.64, 102,411.96 and 42,381.78

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Solution

The fourth proportional to 74,219.64, 102,411.96 and 42,381.78 is: 58,480.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,219.64 : 102,411.96 = 42,381.78 : x
  2. Step 2: Convert to fraction form
    74,219.64/102,411.96 = 42,381.78/x
  3. Step 3: Cross multiply
    74,219.64x = 102,411.96 × 42,381.78
  4. Step 4: Simplify right side
    74,219.64x = 4,340,401,158.09
  5. Step 5: Solve for x
    x = 4,340,401,158.09/74,219.64
  6. Step 6: Final answer
    x = 58,480.49

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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.