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Finding the Fourth Proportional to 51,368.49, 70,879.50 and 28,700.24

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Solution

The fourth proportional to 51,368.49, 70,879.50 and 28,700.24 is: 39,601.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,368.49 : 70,879.50 = 28,700.24 : x
  2. Step 2: Convert to fraction form
    51,368.49/70,879.50 = 28,700.24/x
  3. Step 3: Cross multiply
    51,368.49x = 70,879.50 × 28,700.24
  4. Step 4: Simplify right side
    51,368.49x = 2,034,258,306.68
  5. Step 5: Solve for x
    x = 2,034,258,306.68/51,368.49
  6. Step 6: Final answer
    x = 39,601.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.