Home / 90,870.33-136,295.77-31,707.12

Finding the Fourth Proportional to 90,870.33, 136,295.77 and 31,707.12

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Solution

The fourth proportional to 90,870.33, 136,295.77 and 31,707.12 is: 47,557.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,870.33 : 136,295.77 = 31,707.12 : x
  2. Step 2: Convert to fraction form
    90,870.33/136,295.77 = 31,707.12/x
  3. Step 3: Cross multiply
    90,870.33x = 136,295.77 × 31,707.12
  4. Step 4: Simplify right side
    90,870.33x = 4,321,545,744.51
  5. Step 5: Solve for x
    x = 4,321,545,744.51/90,870.33
  6. Step 6: Final answer
    x = 47,557.28

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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.