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Finding the Fourth Proportional to 70,054.55, 104,966.40 and 40,420.70

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Solution

The fourth proportional to 70,054.55, 104,966.40 and 40,420.70 is: 60,564.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,054.55 : 104,966.40 = 40,420.70 : x
  2. Step 2: Convert to fraction form
    70,054.55/104,966.40 = 40,420.70/x
  3. Step 3: Cross multiply
    70,054.55x = 104,966.40 × 40,420.70
  4. Step 4: Simplify right side
    70,054.55x = 4,242,815,364.48
  5. Step 5: Solve for x
    x = 4,242,815,364.48/70,054.55
  6. Step 6: Final answer
    x = 60,564.45

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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.