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Finding the Fourth Proportional to 64,492.17, 89,017.77 and 38,998.59

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Solution

The fourth proportional to 64,492.17, 89,017.77 and 38,998.59 is: 53,829.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,492.17 : 89,017.77 = 38,998.59 : x
  2. Step 2: Convert to fraction form
    64,492.17/89,017.77 = 38,998.59/x
  3. Step 3: Cross multiply
    64,492.17x = 89,017.77 × 38,998.59
  4. Step 4: Simplify right side
    64,492.17x = 3,471,567,514.94
  5. Step 5: Solve for x
    x = 3,471,567,514.94/64,492.17
  6. Step 6: Final answer
    x = 53,829.29

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1.5x scale

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.