Home / 51,237.90-70,697.55-31,105.38

Finding the Fourth Proportional to 51,237.90, 70,697.55 and 31,105.38

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Solution

The fourth proportional to 51,237.90, 70,697.55 and 31,105.38 is: 42,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,237.90 : 70,697.55 = 31,105.38 : x
  2. Step 2: Convert to fraction form
    51,237.90/70,697.55 = 31,105.38/x
  3. Step 3: Cross multiply
    51,237.90x = 70,697.55 × 31,105.38
  4. Step 4: Simplify right side
    51,237.90x = 2,199,074,157.82
  5. Step 5: Solve for x
    x = 2,199,074,157.82/51,237.90
  6. Step 6: Final answer
    x = 42,918.90

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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.