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Finding the Fourth Proportional to 51,608.76, 77,403.42 and 20,018.76

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Solution

The fourth proportional to 51,608.76, 77,403.42 and 20,018.76 is: 30,024.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,608.76 : 77,403.42 = 20,018.76 : x
  2. Step 2: Convert to fraction form
    51,608.76/77,403.42 = 20,018.76/x
  3. Step 3: Cross multiply
    51,608.76x = 77,403.42 × 20,018.76
  4. Step 4: Simplify right side
    51,608.76x = 1,549,520,488.16
  5. Step 5: Solve for x
    x = 1,549,520,488.16/51,608.76
  6. Step 6: Final answer
    x = 30,024.37

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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.