Home / 85,460.48-128,037.12-52,163.20

Finding the Fourth Proportional to 85,460.48, 128,037.12 and 52,163.20

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Solution

The fourth proportional to 85,460.48, 128,037.12 and 52,163.20 is: 78,151.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,460.48 : 128,037.12 = 52,163.20 : x
  2. Step 2: Convert to fraction form
    85,460.48/128,037.12 = 52,163.20/x
  3. Step 3: Cross multiply
    85,460.48x = 128,037.12 × 52,163.20
  4. Step 4: Simplify right side
    85,460.48x = 6,678,825,897.98
  5. Step 5: Solve for x
    x = 6,678,825,897.98/85,460.48
  6. Step 6: Final answer
    x = 78,151.05

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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.