Home / 85,840,108.30-128,768,035.65-28,332,505.90

Finding the Fourth Proportional to 85,840,108.30, 128,768,035.65 and 28,332,505.90

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Solution

The fourth proportional to 85,840,108.30, 128,768,035.65 and 28,332,505.90 is: 42,501,357.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,108.30 : 128,768,035.65 = 28,332,505.90 : x
  2. Step 2: Convert to fraction form
    85,840,108.30/128,768,035.65 = 28,332,505.90/x
  3. Step 3: Cross multiply
    85,840,108.30x = 128,768,035.65 × 28,332,505.90
  4. Step 4: Simplify right side
    85,840,108.30x = 3,648,321,129,785,035.50
  5. Step 5: Solve for x
    x = 3,648,321,129,785,035.50/85,840,108.30
  6. Step 6: Final answer
    x = 42,501,357.49

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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.