Home / 45,129.15-67,675.05-13,528.08

Finding the Fourth Proportional to 45,129.15, 67,675.05 and 13,528.08

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Solution

The fourth proportional to 45,129.15, 67,675.05 and 13,528.08 is: 20,286.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,129.15 : 67,675.05 = 13,528.08 : x
  2. Step 2: Convert to fraction form
    45,129.15/67,675.05 = 13,528.08/x
  3. Step 3: Cross multiply
    45,129.15x = 67,675.05 × 13,528.08
  4. Step 4: Simplify right side
    45,129.15x = 915,513,490.40
  5. Step 5: Solve for x
    x = 915,513,490.40/45,129.15
  6. Step 6: Final answer
    x = 20,286.52

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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.