Home / 56,978,513.10-78,630,418.31-30,873,023.10

Finding the Fourth Proportional to 56,978,513.10, 78,630,418.31 and 30,873,023.10

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Solution

The fourth proportional to 56,978,513.10, 78,630,418.31 and 30,873,023.10 is: 42,604,809.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,978,513.10 : 78,630,418.31 = 30,873,023.10 : x
  2. Step 2: Convert to fraction form
    56,978,513.10/78,630,418.31 = 30,873,023.10/x
  3. Step 3: Cross multiply
    56,978,513.10x = 78,630,418.31 × 30,873,023.10
  4. Step 4: Simplify right side
    56,978,513.10x = 2,427,558,720,692,928
  5. Step 5: Solve for x
    x = 2,427,558,720,692,928/56,978,513.10
  6. Step 6: Final answer
    x = 42,604,809.93

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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.