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Finding the Fourth Proportional to 70,352.80, 105,529.20 and 64,823.20

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Solution

The fourth proportional to 70,352.80, 105,529.20 and 64,823.20 is: 97,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,352.80 : 105,529.20 = 64,823.20 : x
  2. Step 2: Convert to fraction form
    70,352.80/105,529.20 = 64,823.20/x
  3. Step 3: Cross multiply
    70,352.80x = 105,529.20 × 64,823.20
  4. Step 4: Simplify right side
    70,352.80x = 6,840,740,437.44
  5. Step 5: Solve for x
    x = 6,840,740,437.44/70,352.80
  6. Step 6: Final answer
    x = 97,234.80

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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.