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Finding the Fourth Proportional to 99,646.56, 149,494.08 and 28,570.56

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Solution

The fourth proportional to 99,646.56, 149,494.08 and 28,570.56 is: 42,862.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,646.56 : 149,494.08 = 28,570.56 : x
  2. Step 2: Convert to fraction form
    99,646.56/149,494.08 = 28,570.56/x
  3. Step 3: Cross multiply
    99,646.56x = 149,494.08 × 28,570.56
  4. Step 4: Simplify right side
    99,646.56x = 4,271,129,582.28
  5. Step 5: Solve for x
    x = 4,271,129,582.28/99,646.56
  6. Step 6: Final answer
    x = 42,862.79

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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.