Home / 51,237.80-70,687.78-31,087.30

Finding the Fourth Proportional to 51,237.80, 70,687.78 and 31,087.30

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Solution

The fourth proportional to 51,237.80, 70,687.78 and 31,087.30 is: 42,888.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,237.80 : 70,687.78 = 31,087.30 : x
  2. Step 2: Convert to fraction form
    51,237.80/70,687.78 = 31,087.30/x
  3. Step 3: Cross multiply
    51,237.80x = 70,687.78 × 31,087.30
  4. Step 4: Simplify right side
    51,237.80x = 2,197,492,223.19
  5. Step 5: Solve for x
    x = 2,197,492,223.19/51,237.80
  6. Step 6: Final answer
    x = 42,888.11

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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.