Home / 55,331.40-76,354.63-31,457.57

Finding the Fourth Proportional to 55,331.40, 76,354.63 and 31,457.57

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Solution

The fourth proportional to 55,331.40, 76,354.63 and 31,457.57 is: 43,409.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,331.40 : 76,354.63 = 31,457.57 : x
  2. Step 2: Convert to fraction form
    55,331.40/76,354.63 = 31,457.57/x
  3. Step 3: Cross multiply
    55,331.40x = 76,354.63 × 31,457.57
  4. Step 4: Simplify right side
    55,331.40x = 2,401,930,657.63
  5. Step 5: Solve for x
    x = 2,401,930,657.63/55,331.40
  6. Step 6: Final answer
    x = 43,409.90

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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.