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Finding the Fourth Proportional to 65,238.99, 90,030.15 and 36,558.72

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Solution

The fourth proportional to 65,238.99, 90,030.15 and 36,558.72 is: 50,451.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,238.99 : 90,030.15 = 36,558.72 : x
  2. Step 2: Convert to fraction form
    65,238.99/90,030.15 = 36,558.72/x
  3. Step 3: Cross multiply
    65,238.99x = 90,030.15 × 36,558.72
  4. Step 4: Simplify right side
    65,238.99x = 3,291,387,045.41
  5. Step 5: Solve for x
    x = 3,291,387,045.41/65,238.99
  6. Step 6: Final answer
    x = 50,451.23

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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.