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Finding the Fourth Proportional to 65,464.47, 90,347.67 and 38,615.67

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Solution

The fourth proportional to 65,464.47, 90,347.67 and 38,615.67 is: 53,293.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,464.47 : 90,347.67 = 38,615.67 : x
  2. Step 2: Convert to fraction form
    65,464.47/90,347.67 = 38,615.67/x
  3. Step 3: Cross multiply
    65,464.47x = 90,347.67 × 38,615.67
  4. Step 4: Simplify right side
    65,464.47x = 3,488,835,809.99
  5. Step 5: Solve for x
    x = 3,488,835,809.99/65,464.47
  6. Step 6: Final answer
    x = 53,293.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.