Home / 90,381,577.21-124,740,211.61-55,119,839.51

Finding the Fourth Proportional to 90,381,577.21, 124,740,211.61 and 55,119,839.51

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Solution

The fourth proportional to 90,381,577.21, 124,740,211.61 and 55,119,839.51 is: 76,073,693.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,381,577.21 : 124,740,211.61 = 55,119,839.51 : x
  2. Step 2: Convert to fraction form
    90,381,577.21/124,740,211.61 = 55,119,839.51/x
  3. Step 3: Cross multiply
    90,381,577.21x = 124,740,211.61 × 55,119,839.51
  4. Step 4: Simplify right side
    90,381,577.21x = 6,875,660,444,836,289
  5. Step 5: Solve for x
    x = 6,875,660,444,836,289/90,381,577.21
  6. Step 6: Final answer
    x = 76,073,693.97

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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.