Home / 55,307.05-76,328.27-31,441.21

Finding the Fourth Proportional to 55,307.05, 76,328.27 and 31,441.21

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Solution

The fourth proportional to 55,307.05, 76,328.27 and 31,441.21 is: 43,391.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,307.05 : 76,328.27 = 31,441.21 : x
  2. Step 2: Convert to fraction form
    55,307.05/76,328.27 = 31,441.21/x
  3. Step 3: Cross multiply
    55,307.05x = 76,328.27 × 31,441.21
  4. Step 4: Simplify right side
    55,307.05x = 2,399,853,008.80
  5. Step 5: Solve for x
    x = 2,399,853,008.80/55,307.05
  6. Step 6: Final answer
    x = 43,391.45

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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.