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Finding the Fourth Proportional to 53,145, 73,343.43 and 29,271.67

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Solution

The fourth proportional to 53,145, 73,343.43 and 29,271.67 is: 40,396.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,145 : 73,343.43 = 29,271.67 : x
  2. Step 2: Convert to fraction form
    53,145/73,343.43 = 29,271.67/x
  3. Step 3: Cross multiply
    53,145x = 73,343.43 × 29,271.67
  4. Step 4: Simplify right side
    53,145x = 2,146,884,679.63
  5. Step 5: Solve for x
    x = 2,146,884,679.63/53,145
  6. Step 6: Final answer
    x = 40,396.74

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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.