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Finding the Fourth Proportional to 76,205.70, 105,165.56 and 43,499.45

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Solution

The fourth proportional to 76,205.70, 105,165.56 and 43,499.45 is: 60,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,205.70 : 105,165.56 = 43,499.45 : x
  2. Step 2: Convert to fraction form
    76,205.70/105,165.56 = 43,499.45/x
  3. Step 3: Cross multiply
    76,205.70x = 105,165.56 × 43,499.45
  4. Step 4: Simplify right side
    76,205.70x = 4,574,643,756.03
  5. Step 5: Solve for x
    x = 4,574,643,756.03/76,205.70
  6. Step 6: Final answer
    x = 60,030.20

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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.