Home / 40,990.05-61,485.09-31,643.71

Finding the Fourth Proportional to 40,990.05, 61,485.09 and 31,643.71

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Solution

The fourth proportional to 40,990.05, 61,485.09 and 31,643.71 is: 47,465.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,990.05 : 61,485.09 = 31,643.71 : x
  2. Step 2: Convert to fraction form
    40,990.05/61,485.09 = 31,643.71/x
  3. Step 3: Cross multiply
    40,990.05x = 61,485.09 × 31,643.71
  4. Step 4: Simplify right side
    40,990.05x = 1,945,616,315.48
  5. Step 5: Solve for x
    x = 1,945,616,315.48/40,990.05
  6. Step 6: Final answer
    x = 47,465.58

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1.5x scale

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.