Home / 56,168.64-84,240-21,111.84

Finding the Fourth Proportional to 56,168.64, 84,240 and 21,111.84

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Solution

The fourth proportional to 56,168.64, 84,240 and 21,111.84 is: 31,662.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,168.64 : 84,240 = 21,111.84 : x
  2. Step 2: Convert to fraction form
    56,168.64/84,240 = 21,111.84/x
  3. Step 3: Cross multiply
    56,168.64x = 84,240 × 21,111.84
  4. Step 4: Simplify right side
    56,168.64x = 1,778,461,401.60
  5. Step 5: Solve for x
    x = 1,778,461,401.60/56,168.64
  6. Step 6: Final answer
    x = 31,662.89

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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.