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Finding the Fourth Proportional to 60,530.84, 90,810.81 and 18,977.84

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Solution

The fourth proportional to 60,530.84, 90,810.81 and 18,977.84 is: 28,471.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,530.84 : 90,810.81 = 18,977.84 : x
  2. Step 2: Convert to fraction form
    60,530.84/90,810.81 = 18,977.84/x
  3. Step 3: Cross multiply
    60,530.84x = 90,810.81 × 18,977.84
  4. Step 4: Simplify right side
    60,530.84x = 1,723,392,568.40
  5. Step 5: Solve for x
    x = 1,723,392,568.40/60,530.84
  6. Step 6: Final answer
    x = 28,471.32

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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.