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Finding the Fourth Proportional to 60,086.98, 90,143.40 and 17,970.40

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Solution

The fourth proportional to 60,086.98, 90,143.40 and 17,970.40 is: 26,959.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,086.98 : 90,143.40 = 17,970.40 : x
  2. Step 2: Convert to fraction form
    60,086.98/90,143.40 = 17,970.40/x
  3. Step 3: Cross multiply
    60,086.98x = 90,143.40 × 17,970.40
  4. Step 4: Simplify right side
    60,086.98x = 1,619,912,955.36
  5. Step 5: Solve for x
    x = 1,619,912,955.36/60,086.98
  6. Step 6: Final answer
    x = 26,959.47

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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.