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Finding the Fourth Proportional to 65,303.64, 90,117.99 and 36,623.16

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Solution

The fourth proportional to 65,303.64, 90,117.99 and 36,623.16 is: 50,539.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,303.64 : 90,117.99 = 36,623.16 : x
  2. Step 2: Convert to fraction form
    65,303.64/90,117.99 = 36,623.16/x
  3. Step 3: Cross multiply
    65,303.64x = 90,117.99 × 36,623.16
  4. Step 4: Simplify right side
    65,303.64x = 3,300,405,566.65
  5. Step 5: Solve for x
    x = 3,300,405,566.65/65,303.64
  6. Step 6: Final answer
    x = 50,539.38

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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.