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Finding the Fourth Proportional to 39,765.60, 59,655.60 and 19,994.40

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Solution

The fourth proportional to 39,765.60, 59,655.60 and 19,994.40 is: 29,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,765.60 : 59,655.60 = 19,994.40 : x
  2. Step 2: Convert to fraction form
    39,765.60/59,655.60 = 19,994.40/x
  3. Step 3: Cross multiply
    39,765.60x = 59,655.60 × 19,994.40
  4. Step 4: Simplify right side
    39,765.60x = 1,192,777,928.64
  5. Step 5: Solve for x
    x = 1,192,777,928.64/39,765.60
  6. Step 6: Final answer
    x = 29,995.22

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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.