Home / 77,783,468.32-107,343,350.64-42,978,400.96

Finding the Fourth Proportional to 77,783,468.32, 107,343,350.64 and 42,978,400.96

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Solution

The fourth proportional to 77,783,468.32, 107,343,350.64 and 42,978,400.96 is: 59,311,389.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,783,468.32 : 107,343,350.64 = 42,978,400.96 : x
  2. Step 2: Convert to fraction form
    77,783,468.32/107,343,350.64 = 42,978,400.96/x
  3. Step 3: Cross multiply
    77,783,468.32x = 107,343,350.64 × 42,978,400.96
  4. Step 4: Simplify right side
    77,783,468.32x = 4,613,445,564,195,793
  5. Step 5: Solve for x
    x = 4,613,445,564,195,793/77,783,468.32
  6. Step 6: Final answer
    x = 59,311,389.22

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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.