Home / 51,438.09-70,992.12-31,291.06

Finding the Fourth Proportional to 51,438.09, 70,992.12 and 31,291.06

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Solution

The fourth proportional to 51,438.09, 70,992.12 and 31,291.06 is: 43,186.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,438.09 : 70,992.12 = 31,291.06 : x
  2. Step 2: Convert to fraction form
    51,438.09/70,992.12 = 31,291.06/x
  3. Step 3: Cross multiply
    51,438.09x = 70,992.12 × 31,291.06
  4. Step 4: Simplify right side
    51,438.09x = 2,221,418,686.45
  5. Step 5: Solve for x
    x = 2,221,418,686.45/51,438.09
  6. Step 6: Final answer
    x = 43,186.26

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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.