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Finding the Fourth Proportional to 37,666.65, 51,978.18 and 21,756.23

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Solution

The fourth proportional to 37,666.65, 51,978.18 and 21,756.23 is: 30,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,666.65 : 51,978.18 = 21,756.23 : x
  2. Step 2: Convert to fraction form
    37,666.65/51,978.18 = 21,756.23/x
  3. Step 3: Cross multiply
    37,666.65x = 51,978.18 × 21,756.23
  4. Step 4: Simplify right side
    37,666.65x = 1,130,848,979.17
  5. Step 5: Solve for x
    x = 1,130,848,979.17/37,666.65
  6. Step 6: Final answer
    x = 30,022.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.