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Finding the Fourth Proportional to 105,649.76, 145,795.44 and 57,250.72

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Solution

The fourth proportional to 105,649.76, 145,795.44 and 57,250.72 is: 79,005.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,649.76 : 145,795.44 = 57,250.72 : x
  2. Step 2: Convert to fraction form
    105,649.76/145,795.44 = 57,250.72/x
  3. Step 3: Cross multiply
    105,649.76x = 145,795.44 × 57,250.72
  4. Step 4: Simplify right side
    105,649.76x = 8,346,893,912.72
  5. Step 5: Solve for x
    x = 8,346,893,912.72/105,649.76
  6. Step 6: Final answer
    x = 79,005.33

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1.5x scale

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.