Home / 77,783,416.32-107,343,278.88-42,978,349.44

Finding the Fourth Proportional to 77,783,416.32, 107,343,278.88 and 42,978,349.44

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Solution

The fourth proportional to 77,783,416.32, 107,343,278.88 and 42,978,349.44 is: 59,311,318.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,783,416.32 : 107,343,278.88 = 42,978,349.44 : x
  2. Step 2: Convert to fraction form
    77,783,416.32/107,343,278.88 = 42,978,349.44/x
  3. Step 3: Cross multiply
    77,783,416.32x = 107,343,278.88 × 42,978,349.44
  4. Step 4: Simplify right side
    77,783,416.32x = 4,613,436,949,740,011
  5. Step 5: Solve for x
    x = 4,613,436,949,740,011/77,783,416.32
  6. Step 6: Final answer
    x = 59,311,318.12

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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.