Home / 56,390.48-77,821.64-31,240.08

Finding the Fourth Proportional to 56,390.48, 77,821.64 and 31,240.08

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Solution

The fourth proportional to 56,390.48, 77,821.64 and 31,240.08 is: 43,112.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,390.48 : 77,821.64 = 31,240.08 : x
  2. Step 2: Convert to fraction form
    56,390.48/77,821.64 = 31,240.08/x
  3. Step 3: Cross multiply
    56,390.48x = 77,821.64 × 31,240.08
  4. Step 4: Simplify right side
    56,390.48x = 2,431,154,259.33
  5. Step 5: Solve for x
    x = 2,431,154,259.33/56,390.48
  6. Step 6: Final answer
    x = 43,112.85

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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.