Home / 85,603,774.50-128,378,688.18-28,082,641.86

Finding the Fourth Proportional to 85,603,774.50, 128,378,688.18 and 28,082,641.86

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Solution

The fourth proportional to 85,603,774.50, 128,378,688.18 and 28,082,641.86 is: 42,115,114.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603,774.50 : 128,378,688.18 = 28,082,641.86 : x
  2. Step 2: Convert to fraction form
    85,603,774.50/128,378,688.18 = 28,082,641.86/x
  3. Step 3: Cross multiply
    85,603,774.50x = 128,378,688.18 × 28,082,641.86
  4. Step 4: Simplify right side
    85,603,774.50x = 3,605,212,722,615,555.50
  5. Step 5: Solve for x
    x = 3,605,212,722,615,555.50/85,603,774.50
  6. Step 6: Final answer
    x = 42,115,114.01

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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.