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Finding the Fourth Proportional to 82,890.68, 114,354.90 and 57,754.76

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Solution

The fourth proportional to 82,890.68, 114,354.90 and 57,754.76 is: 79,677.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,890.68 : 114,354.90 = 57,754.76 : x
  2. Step 2: Convert to fraction form
    82,890.68/114,354.90 = 57,754.76/x
  3. Step 3: Cross multiply
    82,890.68x = 114,354.90 × 57,754.76
  4. Step 4: Simplify right side
    82,890.68x = 6,604,539,804.32
  5. Step 5: Solve for x
    x = 6,604,539,804.32/82,890.68
  6. Step 6: Final answer
    x = 79,677.71

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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.