Home / 30,833,009.70-42,481,035.81-20,360,428.98

Finding the Fourth Proportional to 30,833,009.70, 42,481,035.81 and 20,360,428.98

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Solution

The fourth proportional to 30,833,009.70, 42,481,035.81 and 20,360,428.98 is: 28,052,146.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,833,009.70 : 42,481,035.81 = 20,360,428.98 : x
  2. Step 2: Convert to fraction form
    30,833,009.70/42,481,035.81 = 20,360,428.98/x
  3. Step 3: Cross multiply
    30,833,009.70x = 42,481,035.81 × 20,360,428.98
  4. Step 4: Simplify right side
    30,833,009.70x = 864,932,112,606,341.88
  5. Step 5: Solve for x
    x = 864,932,112,606,341.88/30,833,009.70
  6. Step 6: Final answer
    x = 28,052,146.74

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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.