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Finding the Fourth Proportional to 42,833.72, 64,242.84 and 11,661.68

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Solution

The fourth proportional to 42,833.72, 64,242.84 and 11,661.68 is: 17,490.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,833.72 : 64,242.84 = 11,661.68 : x
  2. Step 2: Convert to fraction form
    42,833.72/64,242.84 = 11,661.68/x
  3. Step 3: Cross multiply
    42,833.72x = 64,242.84 × 11,661.68
  4. Step 4: Simplify right side
    42,833.72x = 749,179,442.37
  5. Step 5: Solve for x
    x = 749,179,442.37/42,833.72
  6. Step 6: Final answer
    x = 17,490.41

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1.5x scale

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.