Home / 40,088,145.60-55,321,787.52-21,753,430.40

Finding the Fourth Proportional to 40,088,145.60, 55,321,787.52 and 21,753,430.40

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Solution

The fourth proportional to 40,088,145.60, 55,321,787.52 and 21,753,430.40 is: 30,019,813.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,088,145.60 : 55,321,787.52 = 21,753,430.40 : x
  2. Step 2: Convert to fraction form
    40,088,145.60/55,321,787.52 = 21,753,430.40/x
  3. Step 3: Cross multiply
    40,088,145.60x = 55,321,787.52 × 21,753,430.40
  4. Step 4: Simplify right side
    40,088,145.60x = 1,203,438,654,419,908.50
  5. Step 5: Solve for x
    x = 1,203,438,654,419,908.50/40,088,145.60
  6. Step 6: Final answer
    x = 30,019,813.50

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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.