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Finding the Fourth Proportional to 64,686.75, 97,030.13 and 17,939.63

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Solution

The fourth proportional to 64,686.75, 97,030.13 and 17,939.63 is: 26,909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,686.75 : 97,030.13 = 17,939.63 : x
  2. Step 2: Convert to fraction form
    64,686.75/97,030.13 = 17,939.63/x
  3. Step 3: Cross multiply
    64,686.75x = 97,030.13 × 17,939.63
  4. Step 4: Simplify right side
    64,686.75x = 1,740,684,056.20
  5. Step 5: Solve for x
    x = 1,740,684,056.20/64,686.75
  6. Step 6: Final answer
    x = 26,909.44

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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.