Home / 42,120,004.70-58,134,586.71-28,907,255.90

Finding the Fourth Proportional to 42,120,004.70, 58,134,586.71 and 28,907,255.90

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Solution

The fourth proportional to 42,120,004.70, 58,134,586.71 and 28,907,255.90 is: 39,898,176.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,120,004.70 : 58,134,586.71 = 28,907,255.90 : x
  2. Step 2: Convert to fraction form
    42,120,004.70/58,134,586.71 = 28,907,255.90/x
  3. Step 3: Cross multiply
    42,120,004.70x = 58,134,586.71 × 28,907,255.90
  4. Step 4: Simplify right side
    42,120,004.70x = 1,680,511,374,666,709
  5. Step 5: Solve for x
    x = 1,680,511,374,666,709/42,120,004.70
  6. Step 6: Final answer
    x = 39,898,176.33

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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.