Home / 39,354.40-54,378.24-31,461.76

Finding the Fourth Proportional to 39,354.40, 54,378.24 and 31,461.76

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Solution

The fourth proportional to 39,354.40, 54,378.24 and 31,461.76 is: 43,472.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,354.40 : 54,378.24 = 31,461.76 : x
  2. Step 2: Convert to fraction form
    39,354.40/54,378.24 = 31,461.76/x
  3. Step 3: Cross multiply
    39,354.40x = 54,378.24 × 31,461.76
  4. Step 4: Simplify right side
    39,354.40x = 1,710,835,136.10
  5. Step 5: Solve for x
    x = 1,710,835,136.10/39,354.40
  6. Step 6: Final answer
    x = 43,472.52

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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.