Home / 77,814.81-107,352.95-49,515.21

Finding the Fourth Proportional to 77,814.81, 107,352.95 and 49,515.21

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Solution

The fourth proportional to 77,814.81, 107,352.95 and 49,515.21 is: 68,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,814.81 : 107,352.95 = 49,515.21 : x
  2. Step 2: Convert to fraction form
    77,814.81/107,352.95 = 49,515.21/x
  3. Step 3: Cross multiply
    77,814.81x = 107,352.95 × 49,515.21
  4. Step 4: Simplify right side
    77,814.81x = 5,315,603,615.79
  5. Step 5: Solve for x
    x = 5,315,603,615.79/77,814.81
  6. Step 6: Final answer
    x = 68,310.95

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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.