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Finding the Fourth Proportional to 66,303.36, 91,503 and 38,009.52

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Solution

The fourth proportional to 66,303.36, 91,503 and 38,009.52 is: 52,455.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,303.36 : 91,503 = 38,009.52 : x
  2. Step 2: Convert to fraction form
    66,303.36/91,503 = 38,009.52/x
  3. Step 3: Cross multiply
    66,303.36x = 91,503 × 38,009.52
  4. Step 4: Simplify right side
    66,303.36x = 3,477,985,108.56
  5. Step 5: Solve for x
    x = 3,477,985,108.56/66,303.36
  6. Step 6: Final answer
    x = 52,455.64

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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.