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Finding the Fourth Proportional to 38,668,978.14, 53,364,560.31 and 21,266,669.22

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Solution

The fourth proportional to 38,668,978.14, 53,364,560.31 and 21,266,669.22 is: 29,348,757.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,668,978.14 : 53,364,560.31 = 21,266,669.22 : x
  2. Step 2: Convert to fraction form
    38,668,978.14/53,364,560.31 = 21,266,669.22/x
  3. Step 3: Cross multiply
    38,668,978.14x = 53,364,560.31 × 21,266,669.22
  4. Step 4: Simplify right side
    38,668,978.14x = 1,134,886,452,183,510.75
  5. Step 5: Solve for x
    x = 1,134,886,452,183,510.75/38,668,978.14
  6. Step 6: Final answer
    x = 29,348,757.24

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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.