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Finding the Fourth Proportional to 70,399.76, 97,153.61 and 40,190.00

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Solution

The fourth proportional to 70,399.76, 97,153.61 and 40,190.00 is: 55,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,399.76 : 97,153.61 = 40,190.00 : x
  2. Step 2: Convert to fraction form
    70,399.76/97,153.61 = 40,190.00/x
  3. Step 3: Cross multiply
    70,399.76x = 97,153.61 × 40,190.00
  4. Step 4: Simplify right side
    70,399.76x = 3,904,602,899.18
  5. Step 5: Solve for x
    x = 3,904,602,899.18/70,399.76
  6. Step 6: Final answer
    x = 55,463.30

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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.