Home / 78,529.43-117,726.10-31,751.93

Finding the Fourth Proportional to 78,529.43, 117,726.10 and 31,751.93

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Solution

The fourth proportional to 78,529.43, 117,726.10 and 31,751.93 is: 47,600.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,529.43 : 117,726.10 = 31,751.93 : x
  2. Step 2: Convert to fraction form
    78,529.43/117,726.10 = 31,751.93/x
  3. Step 3: Cross multiply
    78,529.43x = 117,726.10 × 31,751.93
  4. Step 4: Simplify right side
    78,529.43x = 3,738,030,886.37
  5. Step 5: Solve for x
    x = 3,738,030,886.37/78,529.43
  6. Step 6: Final answer
    x = 47,600.38

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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.