Home / 145,071.91-217,582.81-38,456.57

Finding the Fourth Proportional to 145,071.91, 217,582.81 and 38,456.57

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Solution

The fourth proportional to 145,071.91, 217,582.81 and 38,456.57 is: 57,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,071.91 : 217,582.81 = 38,456.57 : x
  2. Step 2: Convert to fraction form
    145,071.91/217,582.81 = 38,456.57/x
  3. Step 3: Cross multiply
    145,071.91x = 217,582.81 × 38,456.57
  4. Step 4: Simplify right side
    145,071.91x = 8,367,489,011.38
  5. Step 5: Solve for x
    x = 8,367,489,011.38/145,071.91
  6. Step 6: Final answer
    x = 57,678.22

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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.