Home / 45,139.48-67,709.15-13,549.51

Finding the Fourth Proportional to 45,139.48, 67,709.15 and 13,549.51

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Solution

The fourth proportional to 45,139.48, 67,709.15 and 13,549.51 is: 20,324.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,139.48 : 67,709.15 = 13,549.51 : x
  2. Step 2: Convert to fraction form
    45,139.48/67,709.15 = 13,549.51/x
  3. Step 3: Cross multiply
    45,139.48x = 67,709.15 × 13,549.51
  4. Step 4: Simplify right side
    45,139.48x = 917,425,805.02
  5. Step 5: Solve for x
    x = 917,425,805.02/45,139.48
  6. Step 6: Final answer
    x = 20,324.24

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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.