Home / 45,124.54-67,642.16-21,390.40

Finding the Fourth Proportional to 45,124.54, 67,642.16 and 21,390.40

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Solution

The fourth proportional to 45,124.54, 67,642.16 and 21,390.40 is: 32,064.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,124.54 : 67,642.16 = 21,390.40 : x
  2. Step 2: Convert to fraction form
    45,124.54/67,642.16 = 21,390.40/x
  3. Step 3: Cross multiply
    45,124.54x = 67,642.16 × 21,390.40
  4. Step 4: Simplify right side
    45,124.54x = 1,446,892,859.26
  5. Step 5: Solve for x
    x = 1,446,892,859.26/45,124.54
  6. Step 6: Final answer
    x = 32,064.43

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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.