Home / 66,020.13-99,009.47-21,636.99

Finding the Fourth Proportional to 66,020.13, 99,009.47 and 21,636.99

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Solution

The fourth proportional to 66,020.13, 99,009.47 and 21,636.99 is: 32,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.13 : 99,009.47 = 21,636.99 : x
  2. Step 2: Convert to fraction form
    66,020.13/99,009.47 = 21,636.99/x
  3. Step 3: Cross multiply
    66,020.13x = 99,009.47 × 21,636.99
  4. Step 4: Simplify right side
    66,020.13x = 2,142,266,966.39
  5. Step 5: Solve for x
    x = 2,142,266,966.39/66,020.13
  6. Step 6: Final answer
    x = 32,448.69

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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.