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Finding the Fourth Proportional to 65,178.76, 89,946.68 and 35,370.76

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Solution

The fourth proportional to 65,178.76, 89,946.68 and 35,370.76 is: 48,811.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,178.76 : 89,946.68 = 35,370.76 : x
  2. Step 2: Convert to fraction form
    65,178.76/89,946.68 = 35,370.76/x
  3. Step 3: Cross multiply
    65,178.76x = 89,946.68 × 35,370.76
  4. Step 4: Simplify right side
    65,178.76x = 3,181,482,431.08
  5. Step 5: Solve for x
    x = 3,181,482,431.08/65,178.76
  6. Step 6: Final answer
    x = 48,811.64

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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.