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Finding the Fourth Proportional to 82,756.50, 114,205.80 and 45,030.75

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Solution

The fourth proportional to 82,756.50, 114,205.80 and 45,030.75 is: 62,143.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,756.50 : 114,205.80 = 45,030.75 : x
  2. Step 2: Convert to fraction form
    82,756.50/114,205.80 = 45,030.75/x
  3. Step 3: Cross multiply
    82,756.50x = 114,205.80 × 45,030.75
  4. Step 4: Simplify right side
    82,756.50x = 5,142,772,828.35
  5. Step 5: Solve for x
    x = 5,142,772,828.35/82,756.50
  6. Step 6: Final answer
    x = 62,143.43

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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.