Home / 39,078,743.30-53,935,122.84-21,680,693.72

Finding the Fourth Proportional to 39,078,743.30, 53,935,122.84 and 21,680,693.72

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Solution

The fourth proportional to 39,078,743.30, 53,935,122.84 and 21,680,693.72 is: 29,922,939.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078,743.30 : 53,935,122.84 = 21,680,693.72 : x
  2. Step 2: Convert to fraction form
    39,078,743.30/53,935,122.84 = 21,680,693.72/x
  3. Step 3: Cross multiply
    39,078,743.30x = 53,935,122.84 × 21,680,693.72
  4. Step 4: Simplify right side
    39,078,743.30x = 1,169,350,879,044,616.50
  5. Step 5: Solve for x
    x = 1,169,350,879,044,616.50/39,078,743.30
  6. Step 6: Final answer
    x = 29,922,939.69

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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.