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Finding the Fourth Proportional to 60,254.39, 90,391.84 and 20,802.28

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Solution

The fourth proportional to 60,254.39, 90,391.84 and 20,802.28 is: 31,206.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,254.39 : 90,391.84 = 20,802.28 : x
  2. Step 2: Convert to fraction form
    60,254.39/90,391.84 = 20,802.28/x
  3. Step 3: Cross multiply
    60,254.39x = 90,391.84 × 20,802.28
  4. Step 4: Simplify right side
    60,254.39x = 1,880,356,365.40
  5. Step 5: Solve for x
    x = 1,880,356,365.40/60,254.39
  6. Step 6: Final answer
    x = 31,206.96

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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.