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Finding the Fourth Proportional to 64,700.55, 97,002.81 and 20,302.02

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Solution

The fourth proportional to 64,700.55, 97,002.81 and 20,302.02 is: 30,437.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,700.55 : 97,002.81 = 20,302.02 : x
  2. Step 2: Convert to fraction form
    64,700.55/97,002.81 = 20,302.02/x
  3. Step 3: Cross multiply
    64,700.55x = 97,002.81 × 20,302.02
  4. Step 4: Simplify right side
    64,700.55x = 1,969,352,988.68
  5. Step 5: Solve for x
    x = 1,969,352,988.68/64,700.55
  6. Step 6: Final answer
    x = 30,437.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.