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Finding the Fourth Proportional to 57,681.64, 86,526.54 and 20,237.32

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Solution

The fourth proportional to 57,681.64, 86,526.54 and 20,237.32 is: 30,357.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,681.64 : 86,526.54 = 20,237.32 : x
  2. Step 2: Convert to fraction form
    57,681.64/86,526.54 = 20,237.32/x
  3. Step 3: Cross multiply
    57,681.64x = 86,526.54 × 20,237.32
  4. Step 4: Simplify right side
    57,681.64x = 1,751,065,278.47
  5. Step 5: Solve for x
    x = 1,751,065,278.47/57,681.64
  6. Step 6: Final answer
    x = 30,357.41

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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.