Home / 78,577,319.37-108,436,800.86-42,813,590.86

Finding the Fourth Proportional to 78,577,319.37, 108,436,800.86 and 42,813,590.86

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Solution

The fourth proportional to 78,577,319.37, 108,436,800.86 and 42,813,590.86 is: 59,082,809.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,577,319.37 : 108,436,800.86 = 42,813,590.86 : x
  2. Step 2: Convert to fraction form
    78,577,319.37/108,436,800.86 = 42,813,590.86/x
  3. Step 3: Cross multiply
    78,577,319.37x = 108,436,800.86 × 42,813,590.86
  4. Step 4: Simplify right side
    78,577,319.37x = 4,642,568,826,023,278
  5. Step 5: Solve for x
    x = 4,642,568,826,023,278/78,577,319.37
  6. Step 6: Final answer
    x = 59,082,809.94

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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.