Home / 90,726.51-136,112.10-31,562.70

Finding the Fourth Proportional to 90,726.51, 136,112.10 and 31,562.70

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Solution

The fourth proportional to 90,726.51, 136,112.10 and 31,562.70 is: 47,351.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,726.51 : 136,112.10 = 31,562.70 : x
  2. Step 2: Convert to fraction form
    90,726.51/136,112.10 = 31,562.70/x
  3. Step 3: Cross multiply
    90,726.51x = 136,112.10 × 31,562.70
  4. Step 4: Simplify right side
    90,726.51x = 4,296,064,749.89
  5. Step 5: Solve for x
    x = 4,296,064,749.89/90,726.51
  6. Step 6: Final answer
    x = 47,351.81

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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.