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Finding the Fourth Proportional to 91,303.75, 136,955.67 and 28,974.25

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Solution

The fourth proportional to 91,303.75, 136,955.67 and 28,974.25 is: 43,461.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,303.75 : 136,955.67 = 28,974.25 : x
  2. Step 2: Convert to fraction form
    91,303.75/136,955.67 = 28,974.25/x
  3. Step 3: Cross multiply
    91,303.75x = 136,955.67 × 28,974.25
  4. Step 4: Simplify right side
    91,303.75x = 3,968,187,821.50
  5. Step 5: Solve for x
    x = 3,968,187,821.50/91,303.75
  6. Step 6: Final answer
    x = 43,461.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.