Home / 45,111.40-67,667.10-18,807.40

Finding the Fourth Proportional to 45,111.40, 67,667.10 and 18,807.40

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Solution

The fourth proportional to 45,111.40, 67,667.10 and 18,807.40 is: 28,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,111.40 : 67,667.10 = 18,807.40 : x
  2. Step 2: Convert to fraction form
    45,111.40/67,667.10 = 18,807.40/x
  3. Step 3: Cross multiply
    45,111.40x = 67,667.10 × 18,807.40
  4. Step 4: Simplify right side
    45,111.40x = 1,272,642,216.54
  5. Step 5: Solve for x
    x = 1,272,642,216.54/45,111.40
  6. Step 6: Final answer
    x = 28,211.10

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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.