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Finding the Fourth Proportional to 56,991, 78,645.45 and 32,795.70

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Solution

The fourth proportional to 56,991, 78,645.45 and 32,795.70 is: 45,256.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,991 : 78,645.45 = 32,795.70 : x
  2. Step 2: Convert to fraction form
    56,991/78,645.45 = 32,795.70/x
  3. Step 3: Cross multiply
    56,991x = 78,645.45 × 32,795.70
  4. Step 4: Simplify right side
    56,991x = 2,579,232,584.57
  5. Step 5: Solve for x
    x = 2,579,232,584.57/56,991
  6. Step 6: Final answer
    x = 45,256.84

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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.