Home / 39,315.90-54,325.03-31,423.26

Finding the Fourth Proportional to 39,315.90, 54,325.03 and 31,423.26

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Solution

The fourth proportional to 39,315.90, 54,325.03 and 31,423.26 is: 43,419.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,315.90 : 54,325.03 = 31,423.26 : x
  2. Step 2: Convert to fraction form
    39,315.90/54,325.03 = 31,423.26/x
  3. Step 3: Cross multiply
    39,315.90x = 54,325.03 × 31,423.26
  4. Step 4: Simplify right side
    39,315.90x = 1,707,069,542.20
  5. Step 5: Solve for x
    x = 1,707,069,542.20/39,315.90
  6. Step 6: Final answer
    x = 43,419.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.