Home / 42,981.44-64,492-19,615.04

Finding the Fourth Proportional to 42,981.44, 64,492 and 19,615.04

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Solution

The fourth proportional to 42,981.44, 64,492 and 19,615.04 is: 29,431.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,981.44 : 64,492 = 19,615.04 : x
  2. Step 2: Convert to fraction form
    42,981.44/64,492 = 19,615.04/x
  3. Step 3: Cross multiply
    42,981.44x = 64,492 × 19,615.04
  4. Step 4: Simplify right side
    42,981.44x = 1,265,013,159.68
  5. Step 5: Solve for x
    x = 1,265,013,159.68/42,981.44
  6. Step 6: Final answer
    x = 29,431.61

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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.