Home / 45,647.40-68,427.36-19,315.92

Finding the Fourth Proportional to 45,647.40, 68,427.36 and 19,315.92

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Solution

The fourth proportional to 45,647.40, 68,427.36 and 19,315.92 is: 28,955.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,647.40 : 68,427.36 = 19,315.92 : x
  2. Step 2: Convert to fraction form
    45,647.40/68,427.36 = 19,315.92/x
  3. Step 3: Cross multiply
    45,647.40x = 68,427.36 × 19,315.92
  4. Step 4: Simplify right side
    45,647.40x = 1,321,737,411.57
  5. Step 5: Solve for x
    x = 1,321,737,411.57/45,647.40
  6. Step 6: Final answer
    x = 28,955.37

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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.