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Finding the Fourth Proportional to 64,638.76, 89,206.50 and 36,347.08

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Solution

The fourth proportional to 64,638.76, 89,206.50 and 36,347.08 is: 50,161.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,638.76 : 89,206.50 = 36,347.08 : x
  2. Step 2: Convert to fraction form
    64,638.76/89,206.50 = 36,347.08/x
  3. Step 3: Cross multiply
    64,638.76x = 89,206.50 × 36,347.08
  4. Step 4: Simplify right side
    64,638.76x = 3,242,395,792.02
  5. Step 5: Solve for x
    x = 3,242,395,792.02/64,638.76
  6. Step 6: Final answer
    x = 50,161.79

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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.