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Finding the Fourth Proportional to 115,453.70, 159,328.80 and 64,464.71

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Solution

The fourth proportional to 115,453.70, 159,328.80 and 64,464.71 is: 88,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,453.70 : 159,328.80 = 64,464.71 : x
  2. Step 2: Convert to fraction form
    115,453.70/159,328.80 = 64,464.71/x
  3. Step 3: Cross multiply
    115,453.70x = 159,328.80 × 64,464.71
  4. Step 4: Simplify right side
    115,453.70x = 10,271,084,090.00
  5. Step 5: Solve for x
    x = 10,271,084,090.00/115,453.70
  6. Step 6: Final answer
    x = 88,962.80

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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.