Home / 45,857.34-68,726.80-20,538.36

Finding the Fourth Proportional to 45,857.34, 68,726.80 and 20,538.36

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Solution

The fourth proportional to 45,857.34, 68,726.80 and 20,538.36 is: 30,781.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,857.34 : 68,726.80 = 20,538.36 : x
  2. Step 2: Convert to fraction form
    45,857.34/68,726.80 = 20,538.36/x
  3. Step 3: Cross multiply
    45,857.34x = 68,726.80 × 20,538.36
  4. Step 4: Simplify right side
    45,857.34x = 1,411,535,670.19
  5. Step 5: Solve for x
    x = 1,411,535,670.19/45,857.34
  6. Step 6: Final answer
    x = 30,781.02

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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.