Home / 78,532.20-117,798.30-47,428.20

Finding the Fourth Proportional to 78,532.20, 117,798.30 and 47,428.20

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Solution

The fourth proportional to 78,532.20, 117,798.30 and 47,428.20 is: 71,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,532.20 : 117,798.30 = 47,428.20 : x
  2. Step 2: Convert to fraction form
    78,532.20/117,798.30 = 47,428.20/x
  3. Step 3: Cross multiply
    78,532.20x = 117,798.30 × 47,428.20
  4. Step 4: Simplify right side
    78,532.20x = 5,586,961,332.06
  5. Step 5: Solve for x
    x = 5,586,961,332.06/78,532.20
  6. Step 6: Final answer
    x = 71,142.30

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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.