Home / 45,711.40-68,542.80-19,386.40

Finding the Fourth Proportional to 45,711.40, 68,542.80 and 19,386.40

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Solution

The fourth proportional to 45,711.40, 68,542.80 and 19,386.40 is: 29,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,711.40 : 68,542.80 = 19,386.40 : x
  2. Step 2: Convert to fraction form
    45,711.40/68,542.80 = 19,386.40/x
  3. Step 3: Cross multiply
    45,711.40x = 68,542.80 × 19,386.40
  4. Step 4: Simplify right side
    45,711.40x = 1,328,798,137.92
  5. Step 5: Solve for x
    x = 1,328,798,137.92/45,711.40
  6. Step 6: Final answer
    x = 29,069.29

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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.