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Finding the Fourth Proportional to 70,530.40, 105,795.60 and 52,904.80

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Solution

The fourth proportional to 70,530.40, 105,795.60 and 52,904.80 is: 79,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,530.40 : 105,795.60 = 52,904.80 : x
  2. Step 2: Convert to fraction form
    70,530.40/105,795.60 = 52,904.80/x
  3. Step 3: Cross multiply
    70,530.40x = 105,795.60 × 52,904.80
  4. Step 4: Simplify right side
    70,530.40x = 5,597,095,058.88
  5. Step 5: Solve for x
    x = 5,597,095,058.88/70,530.40
  6. Step 6: Final answer
    x = 79,357.20

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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.