Home / 85,845.24-128,601.80-48,291.20

Finding the Fourth Proportional to 85,845.24, 128,601.80 and 48,291.20

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Solution

The fourth proportional to 85,845.24, 128,601.80 and 48,291.20 is: 72,343.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,845.24 : 128,601.80 = 48,291.20 : x
  2. Step 2: Convert to fraction form
    85,845.24/128,601.80 = 48,291.20/x
  3. Step 3: Cross multiply
    85,845.24x = 128,601.80 × 48,291.20
  4. Step 4: Simplify right side
    85,845.24x = 6,210,335,244.16
  5. Step 5: Solve for x
    x = 6,210,335,244.16/85,845.24
  6. Step 6: Final answer
    x = 72,343.38

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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.