Home / 91,393.05-126,121.55-51,106.35

Finding the Fourth Proportional to 91,393.05, 126,121.55 and 51,106.35

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Solution

The fourth proportional to 91,393.05, 126,121.55 and 51,106.35 is: 70,526.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,393.05 : 126,121.55 = 51,106.35 : x
  2. Step 2: Convert to fraction form
    91,393.05/126,121.55 = 51,106.35/x
  3. Step 3: Cross multiply
    91,393.05x = 126,121.55 × 51,106.35
  4. Step 4: Simplify right side
    91,393.05x = 6,445,611,821.31
  5. Step 5: Solve for x
    x = 6,445,611,821.31/91,393.05
  6. Step 6: Final answer
    x = 70,526.28

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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.