Home / 45,134.76-67,710-18,857.94

Finding the Fourth Proportional to 45,134.76, 67,710 and 18,857.94

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Solution

The fourth proportional to 45,134.76, 67,710 and 18,857.94 is: 28,290.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,134.76 : 67,710 = 18,857.94 : x
  2. Step 2: Convert to fraction form
    45,134.76/67,710 = 18,857.94/x
  3. Step 3: Cross multiply
    45,134.76x = 67,710 × 18,857.94
  4. Step 4: Simplify right side
    45,134.76x = 1,276,871,117.40
  5. Step 5: Solve for x
    x = 1,276,871,117.40/45,134.76
  6. Step 6: Final answer
    x = 28,290.19

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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.