Home / 77,038.40-115,557.60-39,546.20

Finding the Fourth Proportional to 77,038.40, 115,557.60 and 39,546.20

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Solution

The fourth proportional to 77,038.40, 115,557.60 and 39,546.20 is: 59,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,038.40 : 115,557.60 = 39,546.20 : x
  2. Step 2: Convert to fraction form
    77,038.40/115,557.60 = 39,546.20/x
  3. Step 3: Cross multiply
    77,038.40x = 115,557.60 × 39,546.20
  4. Step 4: Simplify right side
    77,038.40x = 4,569,863,961.12
  5. Step 5: Solve for x
    x = 4,569,863,961.12/77,038.40
  6. Step 6: Final answer
    x = 59,319.30

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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.