Home / 66,749,219.68-100,139,452-20,688,681.44

Finding the Fourth Proportional to 66,749,219.68, 100,139,452 and 20,688,681.44

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Solution

The fourth proportional to 66,749,219.68, 100,139,452 and 20,688,681.44 is: 31,037,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,749,219.68 : 100,139,452 = 20,688,681.44 : x
  2. Step 2: Convert to fraction form
    66,749,219.68/100,139,452 = 20,688,681.44/x
  3. Step 3: Cross multiply
    66,749,219.68x = 100,139,452 × 20,688,681.44
  4. Step 4: Simplify right side
    66,749,219.68x = 2,071,753,222,004,171
  5. Step 5: Solve for x
    x = 2,071,753,222,004,171/66,749,219.68
  6. Step 6: Final answer
    x = 31,037,864.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.