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Finding the Fourth Proportional to 64,955.56, 89,638.95 and 35,147.56

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Solution

The fourth proportional to 64,955.56, 89,638.95 and 35,147.56 is: 48,503.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,955.56 : 89,638.95 = 35,147.56 : x
  2. Step 2: Convert to fraction form
    64,955.56/89,638.95 = 35,147.56/x
  3. Step 3: Cross multiply
    64,955.56x = 89,638.95 × 35,147.56
  4. Step 4: Simplify right side
    64,955.56x = 3,150,590,373.46
  5. Step 5: Solve for x
    x = 3,150,590,373.46/64,955.56
  6. Step 6: Final answer
    x = 48,503.78

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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.