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Finding the Fourth Proportional to 67,590.78, 101,386.14 and 18,342.78

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Solution

The fourth proportional to 67,590.78, 101,386.14 and 18,342.78 is: 27,514.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,590.78 : 101,386.14 = 18,342.78 : x
  2. Step 2: Convert to fraction form
    67,590.78/101,386.14 = 18,342.78/x
  3. Step 3: Cross multiply
    67,590.78x = 101,386.14 × 18,342.78
  4. Step 4: Simplify right side
    67,590.78x = 1,859,703,661.07
  5. Step 5: Solve for x
    x = 1,859,703,661.07/67,590.78
  6. Step 6: Final answer
    x = 27,514.16

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1.5x scale

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.