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Finding the Fourth Proportional to 77,527.76, 107,028.17 and 66,317.68

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Solution

The fourth proportional to 77,527.76, 107,028.17 and 66,317.68 is: 91,552.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,527.76 : 107,028.17 = 66,317.68 : x
  2. Step 2: Convert to fraction form
    77,527.76/107,028.17 = 66,317.68/x
  3. Step 3: Cross multiply
    77,527.76x = 107,028.17 × 66,317.68
  4. Step 4: Simplify right side
    77,527.76x = 7,097,859,597.46
  5. Step 5: Solve for x
    x = 7,097,859,597.46/77,527.76
  6. Step 6: Final answer
    x = 91,552.49

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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.