Home / 74,144.81-102,320.34-40,153.32

Finding the Fourth Proportional to 74,144.81, 102,320.34 and 40,153.32

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Solution

The fourth proportional to 74,144.81, 102,320.34 and 40,153.32 is: 55,411.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,144.81 : 102,320.34 = 40,153.32 : x
  2. Step 2: Convert to fraction form
    74,144.81/102,320.34 = 40,153.32/x
  3. Step 3: Cross multiply
    74,144.81x = 102,320.34 × 40,153.32
  4. Step 4: Simplify right side
    74,144.81x = 4,108,501,354.53
  5. Step 5: Solve for x
    x = 4,108,501,354.53/74,144.81
  6. Step 6: Final answer
    x = 55,411.85

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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.