Home / 40,768.61-61,145.18-12,689.01

Finding the Fourth Proportional to 40,768.61, 61,145.18 and 12,689.01

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Solution

The fourth proportional to 40,768.61, 61,145.18 and 12,689.01 is: 19,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,768.61 : 61,145.18 = 12,689.01 : x
  2. Step 2: Convert to fraction form
    40,768.61/61,145.18 = 12,689.01/x
  3. Step 3: Cross multiply
    40,768.61x = 61,145.18 × 12,689.01
  4. Step 4: Simplify right side
    40,768.61x = 775,871,784.61
  5. Step 5: Solve for x
    x = 775,871,784.61/40,768.61
  6. Step 6: Final answer
    x = 19,031.11

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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.