Home / 75,072.31-112,600.08-18,912.40

Finding the Fourth Proportional to 75,072.31, 112,600.08 and 18,912.40

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Solution

The fourth proportional to 75,072.31, 112,600.08 and 18,912.40 is: 28,366.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,072.31 : 112,600.08 = 18,912.40 : x
  2. Step 2: Convert to fraction form
    75,072.31/112,600.08 = 18,912.40/x
  3. Step 3: Cross multiply
    75,072.31x = 112,600.08 × 18,912.40
  4. Step 4: Simplify right side
    75,072.31x = 2,129,537,752.99
  5. Step 5: Solve for x
    x = 2,129,537,752.99/75,072.31
  6. Step 6: Final answer
    x = 28,366.49

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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.