Home / 51,451.40-77,256.30-28,123.40

Finding the Fourth Proportional to 51,451.40, 77,256.30 and 28,123.40

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Solution

The fourth proportional to 51,451.40, 77,256.30 and 28,123.40 is: 42,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,451.40 : 77,256.30 = 28,123.40 : x
  2. Step 2: Convert to fraction form
    51,451.40/77,256.30 = 28,123.40/x
  3. Step 3: Cross multiply
    51,451.40x = 77,256.30 × 28,123.40
  4. Step 4: Simplify right side
    51,451.40x = 2,172,709,827.42
  5. Step 5: Solve for x
    x = 2,172,709,827.42/51,451.40
  6. Step 6: Final answer
    x = 42,228.39

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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.