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Finding the Fourth Proportional to 90,105.93, 134,962.02 and 45,656.37

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Solution

The fourth proportional to 90,105.93, 134,962.02 and 45,656.37 is: 68,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,105.93 : 134,962.02 = 45,656.37 : x
  2. Step 2: Convert to fraction form
    90,105.93/134,962.02 = 45,656.37/x
  3. Step 3: Cross multiply
    90,105.93x = 134,962.02 × 45,656.37
  4. Step 4: Simplify right side
    90,105.93x = 6,161,875,921.07
  5. Step 5: Solve for x
    x = 6,161,875,921.07/90,105.93
  6. Step 6: Final answer
    x = 68,384.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.