Home / 91,430.96-137,110.99-31,448.03

Finding the Fourth Proportional to 91,430.96, 137,110.99 and 31,448.03

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Solution

The fourth proportional to 91,430.96, 137,110.99 and 31,448.03 is: 47,159.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,430.96 : 137,110.99 = 31,448.03 : x
  2. Step 2: Convert to fraction form
    91,430.96/137,110.99 = 31,448.03/x
  3. Step 3: Cross multiply
    91,430.96x = 137,110.99 × 31,448.03
  4. Step 4: Simplify right side
    91,430.96x = 4,311,870,908.94
  5. Step 5: Solve for x
    x = 4,311,870,908.94/91,430.96
  6. Step 6: Final answer
    x = 47,159.85

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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.