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Finding the Fourth Proportional to 74,153.28, 102,334.08 and 40,619.28

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Solution

The fourth proportional to 74,153.28, 102,334.08 and 40,619.28 is: 56,056.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,153.28 : 102,334.08 = 40,619.28 : x
  2. Step 2: Convert to fraction form
    74,153.28/102,334.08 = 40,619.28/x
  3. Step 3: Cross multiply
    74,153.28x = 102,334.08 × 40,619.28
  4. Step 4: Simplify right side
    74,153.28x = 4,156,736,649.06
  5. Step 5: Solve for x
    x = 4,156,736,649.06/74,153.28
  6. Step 6: Final answer
    x = 56,056.01

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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.