Home / 30,087.95-45,137.99-20,732.45

Finding the Fourth Proportional to 30,087.95, 45,137.99 and 20,732.45

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Solution

The fourth proportional to 30,087.95, 45,137.99 and 20,732.45 is: 31,102.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,087.95 : 45,137.99 = 20,732.45 : x
  2. Step 2: Convert to fraction form
    30,087.95/45,137.99 = 20,732.45/x
  3. Step 3: Cross multiply
    30,087.95x = 45,137.99 × 20,732.45
  4. Step 4: Simplify right side
    30,087.95x = 935,820,946.92
  5. Step 5: Solve for x
    x = 935,820,946.92/30,087.95
  6. Step 6: Final answer
    x = 31,102.85

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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.