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Finding the Fourth Proportional to 84,792.32, 127,191.20 and 42,649.39

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Solution

The fourth proportional to 84,792.32, 127,191.20 and 42,649.39 is: 63,975.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,792.32 : 127,191.20 = 42,649.39 : x
  2. Step 2: Convert to fraction form
    84,792.32/127,191.20 = 42,649.39/x
  3. Step 3: Cross multiply
    84,792.32x = 127,191.20 × 42,649.39
  4. Step 4: Simplify right side
    84,792.32x = 5,424,627,039.11
  5. Step 5: Solve for x
    x = 5,424,627,039.11/84,792.32
  6. Step 6: Final answer
    x = 63,975.45

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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.