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Finding the Fourth Proportional to 65,534.96, 90,401.72 and 45,403.62

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Solution

The fourth proportional to 65,534.96, 90,401.72 and 45,403.62 is: 62,631.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,534.96 : 90,401.72 = 45,403.62 : x
  2. Step 2: Convert to fraction form
    65,534.96/90,401.72 = 45,403.62/x
  3. Step 3: Cross multiply
    65,534.96x = 90,401.72 × 45,403.62
  4. Step 4: Simplify right side
    65,534.96x = 4,104,565,115.21
  5. Step 5: Solve for x
    x = 4,104,565,115.21/65,534.96
  6. Step 6: Final answer
    x = 62,631.69

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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.