Home / 91,011.13-136,578.15-31,847.31

Finding the Fourth Proportional to 91,011.13, 136,578.15 and 31,847.31

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Solution

The fourth proportional to 91,011.13, 136,578.15 and 31,847.31 is: 47,792.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,011.13 : 136,578.15 = 31,847.31 : x
  2. Step 2: Convert to fraction form
    91,011.13/136,578.15 = 31,847.31/x
  3. Step 3: Cross multiply
    91,011.13x = 136,578.15 × 31,847.31
  4. Step 4: Simplify right side
    91,011.13x = 4,349,646,682.28
  5. Step 5: Solve for x
    x = 4,349,646,682.28/91,011.13
  6. Step 6: Final answer
    x = 47,792.47

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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.