Home / 51,417.80-77,145.90-20,274.76

Finding the Fourth Proportional to 51,417.80, 77,145.90 and 20,274.76

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Solution

The fourth proportional to 51,417.80, 77,145.90 and 20,274.76 is: 30,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,417.80 : 77,145.90 = 20,274.76 : x
  2. Step 2: Convert to fraction form
    51,417.80/77,145.90 = 20,274.76/x
  3. Step 3: Cross multiply
    51,417.80x = 77,145.90 × 20,274.76
  4. Step 4: Simplify right side
    51,417.80x = 1,564,114,607.48
  5. Step 5: Solve for x
    x = 1,564,114,607.48/51,417.80
  6. Step 6: Final answer
    x = 30,419.71

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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.