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Finding the Fourth Proportional to 99,043.32, 148,608.78 and 39,994.32

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Solution

The fourth proportional to 99,043.32, 148,608.78 and 39,994.32 is: 60,009.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,043.32 : 148,608.78 = 39,994.32 : x
  2. Step 2: Convert to fraction form
    99,043.32/148,608.78 = 39,994.32/x
  3. Step 3: Cross multiply
    99,043.32x = 148,608.78 × 39,994.32
  4. Step 4: Simplify right side
    99,043.32x = 5,943,507,102.13
  5. Step 5: Solve for x
    x = 5,943,507,102.13/99,043.32
  6. Step 6: Final answer
    x = 60,009.17

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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.