Home / 42,120,005.70-58,134,588.09-28,907,256.90

Finding the Fourth Proportional to 42,120,005.70, 58,134,588.09 and 28,907,256.90

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Solution

The fourth proportional to 42,120,005.70, 58,134,588.09 and 28,907,256.90 is: 39,898,177.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,120,005.70 : 58,134,588.09 = 28,907,256.90 : x
  2. Step 2: Convert to fraction form
    42,120,005.70/58,134,588.09 = 28,907,256.90/x
  3. Step 3: Cross multiply
    42,120,005.70x = 58,134,588.09 × 28,907,256.90
  4. Step 4: Simplify right side
    42,120,005.70x = 1,680,511,472,693,310.25
  5. Step 5: Solve for x
    x = 1,680,511,472,693,310.25/42,120,005.70
  6. Step 6: Final answer
    x = 39,898,177.71

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1.5x scale

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.