Home / 56,296.32-77,684.64-31,145.28

Finding the Fourth Proportional to 56,296.32, 77,684.64 and 31,145.28

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Solution

The fourth proportional to 56,296.32, 77,684.64 and 31,145.28 is: 42,978.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,296.32 : 77,684.64 = 31,145.28 : x
  2. Step 2: Convert to fraction form
    56,296.32/77,684.64 = 31,145.28/x
  3. Step 3: Cross multiply
    56,296.32x = 77,684.64 × 31,145.28
  4. Step 4: Simplify right side
    56,296.32x = 2,419,509,864.50
  5. Step 5: Solve for x
    x = 2,419,509,864.50/56,296.32
  6. Step 6: Final answer
    x = 42,978.12

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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.