Home / 66,187.13-99,280.69-19,440

Finding the Fourth Proportional to 66,187.13, 99,280.69 and 19,440

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Solution

The fourth proportional to 66,187.13, 99,280.69 and 19,440 is: 29,160

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,187.13 : 99,280.69 = 19,440 : x
  2. Step 2: Convert to fraction form
    66,187.13/99,280.69 = 19,440/x
  3. Step 3: Cross multiply
    66,187.13x = 99,280.69 × 19,440
  4. Step 4: Simplify right side
    66,187.13x = 1,930,016,565
  5. Step 5: Solve for x
    x = 1,930,016,565/66,187.13
  6. Step 6: Final answer
    x = 29,160

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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.