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Finding the Fourth Proportional to 64,609.50, 89,159.49 and 35,929.20

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Solution

The fourth proportional to 64,609.50, 89,159.49 and 35,929.20 is: 49,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,609.50 : 89,159.49 = 35,929.20 : x
  2. Step 2: Convert to fraction form
    64,609.50/89,159.49 = 35,929.20/x
  3. Step 3: Cross multiply
    64,609.50x = 89,159.49 × 35,929.20
  4. Step 4: Simplify right side
    64,609.50x = 3,203,429,148.11
  5. Step 5: Solve for x
    x = 3,203,429,148.11/64,609.50
  6. Step 6: Final answer
    x = 49,581.40

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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.