Home / 78,045,728.32-107,698,863.36-43,236,342.64

Finding the Fourth Proportional to 78,045,728.32, 107,698,863.36 and 43,236,342.64

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Solution

The fourth proportional to 78,045,728.32, 107,698,863.36 and 43,236,342.64 is: 59,663,802.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,045,728.32 : 107,698,863.36 = 43,236,342.64 : x
  2. Step 2: Convert to fraction form
    78,045,728.32/107,698,863.36 = 43,236,342.64/x
  3. Step 3: Cross multiply
    78,045,728.32x = 107,698,863.36 × 43,236,342.64
  4. Step 4: Simplify right side
    78,045,728.32x = 4,656,504,958,171,502
  5. Step 5: Solve for x
    x = 4,656,504,958,171,502/78,045,728.32
  6. Step 6: Final answer
    x = 59,663,802.98

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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.