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Finding the Fourth Proportional to 58,835.79, 81,194.21 and 31,978.29

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Solution

The fourth proportional to 58,835.79, 81,194.21 and 31,978.29 is: 44,130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,835.79 : 81,194.21 = 31,978.29 : x
  2. Step 2: Convert to fraction form
    58,835.79/81,194.21 = 31,978.29/x
  3. Step 3: Cross multiply
    58,835.79x = 81,194.21 × 31,978.29
  4. Step 4: Simplify right side
    58,835.79x = 2,596,451,993.70
  5. Step 5: Solve for x
    x = 2,596,451,993.70/58,835.79
  6. Step 6: Final answer
    x = 44,130.49

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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.