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Finding the Fourth Proportional to 181,670, 272,514.72 and 57,020.72

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Solution

The fourth proportional to 181,670, 272,514.72 and 57,020.72 is: 85,534.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,670 : 272,514.72 = 57,020.72 : x
  2. Step 2: Convert to fraction form
    181,670/272,514.72 = 57,020.72/x
  3. Step 3: Cross multiply
    181,670x = 272,514.72 × 57,020.72
  4. Step 4: Simplify right side
    181,670x = 15,538,985,545.00
  5. Step 5: Solve for x
    x = 15,538,985,545.00/181,670
  6. Step 6: Final answer
    x = 85,534.13

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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.