Home / 85,509.45-128,264.48-50,424.50

Finding the Fourth Proportional to 85,509.45, 128,264.48 and 50,424.50

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Solution

The fourth proportional to 85,509.45, 128,264.48 and 50,424.50 is: 75,636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,509.45 : 128,264.48 = 50,424.50 : x
  2. Step 2: Convert to fraction form
    85,509.45/128,264.48 = 50,424.50/x
  3. Step 3: Cross multiply
    85,509.45x = 128,264.48 × 50,424.50
  4. Step 4: Simplify right side
    85,509.45x = 6,467,672,271.76
  5. Step 5: Solve for x
    x = 6,467,672,271.76/85,509.45
  6. Step 6: Final answer
    x = 75,636.93

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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.