Home / 55,333.78-76,355.31-31,459.12

Finding the Fourth Proportional to 55,333.78, 76,355.31 and 31,459.12

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Solution

The fourth proportional to 55,333.78, 76,355.31 and 31,459.12 is: 43,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,333.78 : 76,355.31 = 31,459.12 : x
  2. Step 2: Convert to fraction form
    55,333.78/76,355.31 = 31,459.12/x
  3. Step 3: Cross multiply
    55,333.78x = 76,355.31 × 31,459.12
  4. Step 4: Simplify right side
    55,333.78x = 2,402,070,859.93
  5. Step 5: Solve for x
    x = 2,402,070,859.93/55,333.78
  6. Step 6: Final answer
    x = 43,410.57

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1.5x scale

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.