Home / 85,835.24-128,586.80-48,281.20

Finding the Fourth Proportional to 85,835.24, 128,586.80 and 48,281.20

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Solution

The fourth proportional to 85,835.24, 128,586.80 and 48,281.20 is: 72,328.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,835.24 : 128,586.80 = 48,281.20 : x
  2. Step 2: Convert to fraction form
    85,835.24/128,586.80 = 48,281.20/x
  3. Step 3: Cross multiply
    85,835.24x = 128,586.80 × 48,281.20
  4. Step 4: Simplify right side
    85,835.24x = 6,208,325,008.16
  5. Step 5: Solve for x
    x = 6,208,325,008.16/85,835.24
  6. Step 6: Final answer
    x = 72,328.39

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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.