Home / 66,273.09-99,428.16-21,931.05

Finding the Fourth Proportional to 66,273.09, 99,428.16 and 21,931.05

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Solution

The fourth proportional to 66,273.09, 99,428.16 and 21,931.05 is: 32,902.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,273.09 : 99,428.16 = 21,931.05 : x
  2. Step 2: Convert to fraction form
    66,273.09/99,428.16 = 21,931.05/x
  3. Step 3: Cross multiply
    66,273.09x = 99,428.16 × 21,931.05
  4. Step 4: Simplify right side
    66,273.09x = 2,180,564,280.10
  5. Step 5: Solve for x
    x = 2,180,564,280.10/66,273.09
  6. Step 6: Final answer
    x = 32,902.71

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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.