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Finding the Fourth Proportional to 64,998.99, 89,699.21 and 38,141.95

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Solution

The fourth proportional to 64,998.99, 89,699.21 and 38,141.95 is: 52,636.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,998.99 : 89,699.21 = 38,141.95 : x
  2. Step 2: Convert to fraction form
    64,998.99/89,699.21 = 38,141.95/x
  3. Step 3: Cross multiply
    64,998.99x = 89,699.21 × 38,141.95
  4. Step 4: Simplify right side
    64,998.99x = 3,421,302,782.86
  5. Step 5: Solve for x
    x = 3,421,302,782.86/64,998.99
  6. Step 6: Final answer
    x = 52,636.25

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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.