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Finding the Fourth Proportional to 60,012.20, 90,018.30 and 18,459.20

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Solution

The fourth proportional to 60,012.20, 90,018.30 and 18,459.20 is: 27,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,012.20 : 90,018.30 = 18,459.20 : x
  2. Step 2: Convert to fraction form
    60,012.20/90,018.30 = 18,459.20/x
  3. Step 3: Cross multiply
    60,012.20x = 90,018.30 × 18,459.20
  4. Step 4: Simplify right side
    60,012.20x = 1,661,665,803.36
  5. Step 5: Solve for x
    x = 1,661,665,803.36/60,012.20
  6. Step 6: Final answer
    x = 27,688.80

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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.