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Finding the Fourth Proportional to 99,015.56, 148,529.84 and 28,889

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Solution

The fourth proportional to 99,015.56, 148,529.84 and 28,889 is: 43,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,015.56 : 148,529.84 = 28,889 : x
  2. Step 2: Convert to fraction form
    99,015.56/148,529.84 = 28,889/x
  3. Step 3: Cross multiply
    99,015.56x = 148,529.84 × 28,889
  4. Step 4: Simplify right side
    99,015.56x = 4,290,878,547.76
  5. Step 5: Solve for x
    x = 4,290,878,547.76/99,015.56
  6. Step 6: Final answer
    x = 43,335.40

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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.