Home / 42,711.78-64,205.97-39,630.16

Finding the Fourth Proportional to 42,711.78, 64,205.97 and 39,630.16

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Solution

The fourth proportional to 42,711.78, 64,205.97 and 39,630.16 is: 59,573.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,711.78 : 64,205.97 = 39,630.16 : x
  2. Step 2: Convert to fraction form
    42,711.78/64,205.97 = 39,630.16/x
  3. Step 3: Cross multiply
    42,711.78x = 64,205.97 × 39,630.16
  4. Step 4: Simplify right side
    42,711.78x = 2,544,492,864.06
  5. Step 5: Solve for x
    x = 2,544,492,864.06/42,711.78
  6. Step 6: Final answer
    x = 59,573.56

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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.