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Finding the Fourth Proportional to 64,695.48, 89,276.34 and 36,403

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Solution

The fourth proportional to 64,695.48, 89,276.34 and 36,403 is: 50,234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,695.48 : 89,276.34 = 36,403 : x
  2. Step 2: Convert to fraction form
    64,695.48/89,276.34 = 36,403/x
  3. Step 3: Cross multiply
    64,695.48x = 89,276.34 × 36,403
  4. Step 4: Simplify right side
    64,695.48x = 3,249,926,605.02
  5. Step 5: Solve for x
    x = 3,249,926,605.02/64,695.48
  6. Step 6: Final answer
    x = 50,234.21

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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.