Home / 81,867.40-122,582.34-52,124.20

Finding the Fourth Proportional to 81,867.40, 122,582.34 and 52,124.20

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Solution

The fourth proportional to 81,867.40, 122,582.34 and 52,124.20 is: 78,047.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,867.40 : 122,582.34 = 52,124.20 : x
  2. Step 2: Convert to fraction form
    81,867.40/122,582.34 = 52,124.20/x
  3. Step 3: Cross multiply
    81,867.40x = 122,582.34 × 52,124.20
  4. Step 4: Simplify right side
    81,867.40x = 6,389,506,406.63
  5. Step 5: Solve for x
    x = 6,389,506,406.63/81,867.40
  6. Step 6: Final answer
    x = 78,047.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.