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Finding the Fourth Proportional to 84,509.88, 126,582.59 and 79,541.46

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Solution

The fourth proportional to 84,509.88, 126,582.59 and 79,541.46 is: 119,140.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,509.88 : 126,582.59 = 79,541.46 : x
  2. Step 2: Convert to fraction form
    84,509.88/126,582.59 = 79,541.46/x
  3. Step 3: Cross multiply
    84,509.88x = 126,582.59 × 79,541.46
  4. Step 4: Simplify right side
    84,509.88x = 10,068,563,621.47
  5. Step 5: Solve for x
    x = 10,068,563,621.47/84,509.88
  6. Step 6: Final answer
    x = 119,140.67

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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.