Home / 78,285.54-108,033.70-42,475.47

Finding the Fourth Proportional to 78,285.54, 108,033.70 and 42,475.47

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Solution

The fourth proportional to 78,285.54, 108,033.70 and 42,475.47 is: 58,615.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,285.54 : 108,033.70 = 42,475.47 : x
  2. Step 2: Convert to fraction form
    78,285.54/108,033.70 = 42,475.47/x
  3. Step 3: Cross multiply
    78,285.54x = 108,033.70 × 42,475.47
  4. Step 4: Simplify right side
    78,285.54x = 4,588,782,131.47
  5. Step 5: Solve for x
    x = 4,588,782,131.47/78,285.54
  6. Step 6: Final answer
    x = 58,615.96

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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.