Home / 72,714.72-100,373.73-42,509.85

Finding the Fourth Proportional to 72,714.72, 100,373.73 and 42,509.85

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Solution

The fourth proportional to 72,714.72, 100,373.73 and 42,509.85 is: 58,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,714.72 : 100,373.73 = 42,509.85 : x
  2. Step 2: Convert to fraction form
    72,714.72/100,373.73 = 42,509.85/x
  3. Step 3: Cross multiply
    72,714.72x = 100,373.73 × 42,509.85
  4. Step 4: Simplify right side
    72,714.72x = 4,266,872,206.24
  5. Step 5: Solve for x
    x = 4,266,872,206.24/72,714.72
  6. Step 6: Final answer
    x = 58,679.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.