Home / 85,840,089.30-128,768,007.15-28,332,486.90

Finding the Fourth Proportional to 85,840,089.30, 128,768,007.15 and 28,332,486.90

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Solution

The fourth proportional to 85,840,089.30, 128,768,007.15 and 28,332,486.90 is: 42,501,328.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,089.30 : 128,768,007.15 = 28,332,486.90 : x
  2. Step 2: Convert to fraction form
    85,840,089.30/128,768,007.15 = 28,332,486.90/x
  3. Step 3: Cross multiply
    85,840,089.30x = 128,768,007.15 × 28,332,486.90
  4. Step 4: Simplify right side
    85,840,089.30x = 3,648,317,875,716,481.50
  5. Step 5: Solve for x
    x = 3,648,317,875,716,481.50/85,840,089.30
  6. Step 6: Final answer
    x = 42,501,328.99

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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.