Home / 78,048.61-117,025.50-30,606.86

Finding the Fourth Proportional to 78,048.61, 117,025.50 and 30,606.86

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Solution

The fourth proportional to 78,048.61, 117,025.50 and 30,606.86 is: 45,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,048.61 : 117,025.50 = 30,606.86 : x
  2. Step 2: Convert to fraction form
    78,048.61/117,025.50 = 30,606.86/x
  3. Step 3: Cross multiply
    78,048.61x = 117,025.50 × 30,606.86
  4. Step 4: Simplify right side
    78,048.61x = 3,581,783,387.49
  5. Step 5: Solve for x
    x = 3,581,783,387.49/78,048.61
  6. Step 6: Final answer
    x = 45,891.70

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1.5x scale

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.