Home / 78,182.12-117,302.70-47,039.24

Finding the Fourth Proportional to 78,182.12, 117,302.70 and 47,039.24

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Solution

The fourth proportional to 78,182.12, 117,302.70 and 47,039.24 is: 70,576.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,182.12 : 117,302.70 = 47,039.24 : x
  2. Step 2: Convert to fraction form
    78,182.12/117,302.70 = 47,039.24/x
  3. Step 3: Cross multiply
    78,182.12x = 117,302.70 × 47,039.24
  4. Step 4: Simplify right side
    78,182.12x = 5,517,829,857.95
  5. Step 5: Solve for x
    x = 5,517,829,857.95/78,182.12
  6. Step 6: Final answer
    x = 70,576.62

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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.