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Finding the Fourth Proportional to 115,613, 159,545.94 and 62,621

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Solution

The fourth proportional to 115,613, 159,545.94 and 62,621 is: 86,416.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,613 : 159,545.94 = 62,621 : x
  2. Step 2: Convert to fraction form
    115,613/159,545.94 = 62,621/x
  3. Step 3: Cross multiply
    115,613x = 159,545.94 × 62,621
  4. Step 4: Simplify right side
    115,613x = 9,990,926,308.74
  5. Step 5: Solve for x
    x = 9,990,926,308.74/115,613
  6. Step 6: Final answer
    x = 86,416.98

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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.