Home / 65,564.22-90,457.48-38,715.68

Finding the Fourth Proportional to 65,564.22, 90,457.48 and 38,715.68

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Solution

The fourth proportional to 65,564.22, 90,457.48 and 38,715.68 is: 53,415.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,564.22 : 90,457.48 = 38,715.68 : x
  2. Step 2: Convert to fraction form
    65,564.22/90,457.48 = 38,715.68/x
  3. Step 3: Cross multiply
    65,564.22x = 90,457.48 × 38,715.68
  4. Step 4: Simplify right side
    65,564.22x = 3,502,122,849.29
  5. Step 5: Solve for x
    x = 3,502,122,849.29/65,564.22
  6. Step 6: Final answer
    x = 53,415.15

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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.