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Finding the Fourth Proportional to 51,010.40, 76,364.40 and 37,920.80

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Solution

The fourth proportional to 51,010.40, 76,364.40 and 37,920.80 is: 56,768.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,010.40 : 76,364.40 = 37,920.80 : x
  2. Step 2: Convert to fraction form
    51,010.40/76,364.40 = 37,920.80/x
  3. Step 3: Cross multiply
    51,010.40x = 76,364.40 × 37,920.80
  4. Step 4: Simplify right side
    51,010.40x = 2,895,799,139.52
  5. Step 5: Solve for x
    x = 2,895,799,139.52/51,010.40
  6. Step 6: Final answer
    x = 56,768.80

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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.