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Finding the Fourth Proportional to 65,457.96, 90,325.50 and 37,163.40

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Solution

The fourth proportional to 65,457.96, 90,325.50 and 37,163.40 is: 51,281.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,457.96 : 90,325.50 = 37,163.40 : x
  2. Step 2: Convert to fraction form
    65,457.96/90,325.50 = 37,163.40/x
  3. Step 3: Cross multiply
    65,457.96x = 90,325.50 × 37,163.40
  4. Step 4: Simplify right side
    65,457.96x = 3,356,802,686.70
  5. Step 5: Solve for x
    x = 3,356,802,686.70/65,457.96
  6. Step 6: Final answer
    x = 51,281.81

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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.