Home / 56,417.92-84,628.36-18,978.64

Finding the Fourth Proportional to 56,417.92, 84,628.36 and 18,978.64

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Solution

The fourth proportional to 56,417.92, 84,628.36 and 18,978.64 is: 28,468.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,417.92 : 84,628.36 = 18,978.64 : x
  2. Step 2: Convert to fraction form
    56,417.92/84,628.36 = 18,978.64/x
  3. Step 3: Cross multiply
    56,417.92x = 84,628.36 × 18,978.64
  4. Step 4: Simplify right side
    56,417.92x = 1,606,131,178.23
  5. Step 5: Solve for x
    x = 1,606,131,178.23/56,417.92
  6. Step 6: Final answer
    x = 28,468.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.