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Finding the Fourth Proportional to 70,513.20, 105,769.80 and 65,592.45

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Solution

The fourth proportional to 70,513.20, 105,769.80 and 65,592.45 is: 98,388.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,513.20 : 105,769.80 = 65,592.45 : x
  2. Step 2: Convert to fraction form
    70,513.20/105,769.80 = 65,592.45/x
  3. Step 3: Cross multiply
    70,513.20x = 105,769.80 × 65,592.45
  4. Step 4: Simplify right side
    70,513.20x = 6,937,700,318.01
  5. Step 5: Solve for x
    x = 6,937,700,318.01/70,513.20
  6. Step 6: Final answer
    x = 98,388.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.