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Finding the Fourth Proportional to 60,116.79, 90,188.15 and 18,000.21

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Solution

The fourth proportional to 60,116.79, 90,188.15 and 18,000.21 is: 27,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,116.79 : 90,188.15 = 18,000.21 : x
  2. Step 2: Convert to fraction form
    60,116.79/90,188.15 = 18,000.21/x
  3. Step 3: Cross multiply
    60,116.79x = 90,188.15 × 18,000.21
  4. Step 4: Simplify right side
    60,116.79x = 1,623,405,549.51
  5. Step 5: Solve for x
    x = 1,623,405,549.51/60,116.79
  6. Step 6: Final answer
    x = 27,004.20

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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.