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Finding the Fourth Proportional to 75,615.40, 113,418.30 and 25,695.40

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Solution

The fourth proportional to 75,615.40, 113,418.30 and 25,695.40 is: 38,541.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,615.40 : 113,418.30 = 25,695.40 : x
  2. Step 2: Convert to fraction form
    75,615.40/113,418.30 = 25,695.40/x
  3. Step 3: Cross multiply
    75,615.40x = 113,418.30 × 25,695.40
  4. Step 4: Simplify right side
    75,615.40x = 2,914,328,585.82
  5. Step 5: Solve for x
    x = 2,914,328,585.82/75,615.40
  6. Step 6: Final answer
    x = 38,541.47

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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.