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Finding the Fourth Proportional to 78,533.80, 108,377.47 and 42,723.73

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Solution

The fourth proportional to 78,533.80, 108,377.47 and 42,723.73 is: 58,959.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,533.80 : 108,377.47 = 42,723.73 : x
  2. Step 2: Convert to fraction form
    78,533.80/108,377.47 = 42,723.73/x
  3. Step 3: Cross multiply
    78,533.80x = 108,377.47 × 42,723.73
  4. Step 4: Simplify right side
    78,533.80x = 4,630,289,530.27
  5. Step 5: Solve for x
    x = 4,630,289,530.27/78,533.80
  6. Step 6: Final answer
    x = 58,959.19

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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.