Home / 57,021,780.62-85,541,206.52-20,638,683.51

Finding the Fourth Proportional to 57,021,780.62, 85,541,206.52 and 20,638,683.51

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Solution

The fourth proportional to 57,021,780.62, 85,541,206.52 and 20,638,683.51 is: 30,961,114.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,021,780.62 : 85,541,206.52 = 20,638,683.51 : x
  2. Step 2: Convert to fraction form
    57,021,780.62/85,541,206.52 = 20,638,683.51/x
  3. Step 3: Cross multiply
    57,021,780.62x = 85,541,206.52 × 20,638,683.51
  4. Step 4: Simplify right side
    57,021,780.62x = 1,765,457,888,326,635.25
  5. Step 5: Solve for x
    x = 1,765,457,888,326,635.25/57,021,780.62
  6. Step 6: Final answer
    x = 30,961,114.67

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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.