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Finding the Fourth Proportional to 60,259.60, 90,388.93 and 18,139.50

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Solution

The fourth proportional to 60,259.60, 90,388.93 and 18,139.50 is: 27,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,259.60 : 90,388.93 = 18,139.50 : x
  2. Step 2: Convert to fraction form
    60,259.60/90,388.93 = 18,139.50/x
  3. Step 3: Cross multiply
    60,259.60x = 90,388.93 × 18,139.50
  4. Step 4: Simplify right side
    60,259.60x = 1,639,609,995.74
  5. Step 5: Solve for x
    x = 1,639,609,995.74/60,259.60
  6. Step 6: Final answer
    x = 27,209.11

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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.