Home / 91,048.36-136,572.60-28,723.72

Finding the Fourth Proportional to 91,048.36, 136,572.60 and 28,723.72

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Solution

The fourth proportional to 91,048.36, 136,572.60 and 28,723.72 is: 43,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,048.36 : 136,572.60 = 28,723.72 : x
  2. Step 2: Convert to fraction form
    91,048.36/136,572.60 = 28,723.72/x
  3. Step 3: Cross multiply
    91,048.36x = 136,572.60 × 28,723.72
  4. Step 4: Simplify right side
    91,048.36x = 3,922,873,122.07
  5. Step 5: Solve for x
    x = 3,922,873,122.07/91,048.36
  6. Step 6: Final answer
    x = 43,085.60

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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.