Home / 52,117.16-78,129.34-18,829.80

Finding the Fourth Proportional to 52,117.16, 78,129.34 and 18,829.80

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Solution

The fourth proportional to 52,117.16, 78,129.34 and 18,829.80 is: 28,227.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,117.16 : 78,129.34 = 18,829.80 : x
  2. Step 2: Convert to fraction form
    52,117.16/78,129.34 = 18,829.80/x
  3. Step 3: Cross multiply
    52,117.16x = 78,129.34 × 18,829.80
  4. Step 4: Simplify right side
    52,117.16x = 1,471,159,846.33
  5. Step 5: Solve for x
    x = 1,471,159,846.33/52,117.16
  6. Step 6: Final answer
    x = 28,227.94

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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.