Home / 66,492.16-99,721.20-19,734.40

Finding the Fourth Proportional to 66,492.16, 99,721.20 and 19,734.40

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Solution

The fourth proportional to 66,492.16, 99,721.20 and 19,734.40 is: 29,596.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,492.16 : 99,721.20 = 19,734.40 : x
  2. Step 2: Convert to fraction form
    66,492.16/99,721.20 = 19,734.40/x
  3. Step 3: Cross multiply
    66,492.16x = 99,721.20 × 19,734.40
  4. Step 4: Simplify right side
    66,492.16x = 1,967,938,049.28
  5. Step 5: Solve for x
    x = 1,967,938,049.28/66,492.16
  6. Step 6: Final answer
    x = 29,596.54

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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.