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Finding the Fourth Proportional to 65,390.58, 90,235.08 and 36,708.12

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Solution

The fourth proportional to 65,390.58, 90,235.08 and 36,708.12 is: 50,655.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,390.58 : 90,235.08 = 36,708.12 : x
  2. Step 2: Convert to fraction form
    65,390.58/90,235.08 = 36,708.12/x
  3. Step 3: Cross multiply
    65,390.58x = 90,235.08 × 36,708.12
  4. Step 4: Simplify right side
    65,390.58x = 3,312,360,144.85
  5. Step 5: Solve for x
    x = 3,312,360,144.85/65,390.58
  6. Step 6: Final answer
    x = 50,655.00

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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.