Home / 77,895.81-107,539.45-51,077.72

Finding the Fourth Proportional to 77,895.81, 107,539.45 and 51,077.72

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Solution

The fourth proportional to 77,895.81, 107,539.45 and 51,077.72 is: 70,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,895.81 : 107,539.45 = 51,077.72 : x
  2. Step 2: Convert to fraction form
    77,895.81/107,539.45 = 51,077.72/x
  3. Step 3: Cross multiply
    77,895.81x = 107,539.45 × 51,077.72
  4. Step 4: Simplify right side
    77,895.81x = 5,492,870,057.21
  5. Step 5: Solve for x
    x = 5,492,870,057.21/77,895.81
  6. Step 6: Final answer
    x = 70,515.60

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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.