Home / 57,008,878.30-78,672,357.05-30,903,315.40

Finding the Fourth Proportional to 57,008,878.30, 78,672,357.05 and 30,903,315.40

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Solution

The fourth proportional to 57,008,878.30, 78,672,357.05 and 30,903,315.40 is: 42,646,632.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,008,878.30 : 78,672,357.05 = 30,903,315.40 : x
  2. Step 2: Convert to fraction form
    57,008,878.30/78,672,357.05 = 30,903,315.40/x
  3. Step 3: Cross multiply
    57,008,878.30x = 78,672,357.05 × 30,903,315.40
  4. Step 4: Simplify right side
    57,008,878.30x = 2,431,236,663,177,563.50
  5. Step 5: Solve for x
    x = 2,431,236,663,177,563.50/57,008,878.30
  6. Step 6: Final answer
    x = 42,646,632.17

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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.