Home / 40,031.36-60,045.68-18,981.49

Finding the Fourth Proportional to 40,031.36, 60,045.68 and 18,981.49

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Solution

The fourth proportional to 40,031.36, 60,045.68 and 18,981.49 is: 28,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,031.36 : 60,045.68 = 18,981.49 : x
  2. Step 2: Convert to fraction form
    40,031.36/60,045.68 = 18,981.49/x
  3. Step 3: Cross multiply
    40,031.36x = 60,045.68 × 18,981.49
  4. Step 4: Simplify right side
    40,031.36x = 1,139,756,079.33
  5. Step 5: Solve for x
    x = 1,139,756,079.33/40,031.36
  6. Step 6: Final answer
    x = 28,471.58

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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.