Home / 66,328.94-99,478.02-18,942.80

Finding the Fourth Proportional to 66,328.94, 99,478.02 and 18,942.80

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Solution

The fourth proportional to 66,328.94, 99,478.02 and 18,942.80 is: 28,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,328.94 : 99,478.02 = 18,942.80 : x
  2. Step 2: Convert to fraction form
    66,328.94/99,478.02 = 18,942.80/x
  3. Step 3: Cross multiply
    66,328.94x = 99,478.02 × 18,942.80
  4. Step 4: Simplify right side
    66,328.94x = 1,884,391,810.90
  5. Step 5: Solve for x
    x = 1,884,391,810.90/66,328.94
  6. Step 6: Final answer
    x = 28,409.80

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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.