Home / 55,128.84-76,075.48-31,257.12

Finding the Fourth Proportional to 55,128.84, 76,075.48 and 31,257.12

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Solution

The fourth proportional to 55,128.84, 76,075.48 and 31,257.12 is: 43,133.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,128.84 : 76,075.48 = 31,257.12 : x
  2. Step 2: Convert to fraction form
    55,128.84/76,075.48 = 31,257.12/x
  3. Step 3: Cross multiply
    55,128.84x = 76,075.48 × 31,257.12
  4. Step 4: Simplify right side
    55,128.84x = 2,377,900,407.42
  5. Step 5: Solve for x
    x = 2,377,900,407.42/55,128.84
  6. Step 6: Final answer
    x = 43,133.51

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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.