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Finding the Fourth Proportional to 53,288.40, 79,932.60 and 51,013.20

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Solution

The fourth proportional to 53,288.40, 79,932.60 and 51,013.20 is: 76,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,288.40 : 79,932.60 = 51,013.20 : x
  2. Step 2: Convert to fraction form
    53,288.40/79,932.60 = 51,013.20/x
  3. Step 3: Cross multiply
    53,288.40x = 79,932.60 × 51,013.20
  4. Step 4: Simplify right side
    53,288.40x = 4,077,617,710.32
  5. Step 5: Solve for x
    x = 4,077,617,710.32/53,288.40
  6. Step 6: Final answer
    x = 76,519.80

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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.