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Finding the Fourth Proportional to 30,607.70, 45,911.55 and 25,686.95

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Solution

The fourth proportional to 30,607.70, 45,911.55 and 25,686.95 is: 38,530.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,607.70 : 45,911.55 = 25,686.95 : x
  2. Step 2: Convert to fraction form
    30,607.70/45,911.55 = 25,686.95/x
  3. Step 3: Cross multiply
    30,607.70x = 45,911.55 × 25,686.95
  4. Step 4: Simplify right side
    30,607.70x = 1,179,327,689.27
  5. Step 5: Solve for x
    x = 1,179,327,689.27/30,607.70
  6. Step 6: Final answer
    x = 38,530.43

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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.