Home / 102,782.56-141,829.05-57,455.77

Finding the Fourth Proportional to 102,782.56, 141,829.05 and 57,455.77

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Solution

The fourth proportional to 102,782.56, 141,829.05 and 57,455.77 is: 79,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,782.56 : 141,829.05 = 57,455.77 : x
  2. Step 2: Convert to fraction form
    102,782.56/141,829.05 = 57,455.77/x
  3. Step 3: Cross multiply
    102,782.56x = 141,829.05 × 57,455.77
  4. Step 4: Simplify right side
    102,782.56x = 8,148,897,276.12
  5. Step 5: Solve for x
    x = 8,148,897,276.12/102,782.56
  6. Step 6: Final answer
    x = 79,282.88

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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.