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Finding the Fourth Proportional to 104,391.72, 156,587.58 and 30,519.72

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Solution

The fourth proportional to 104,391.72, 156,587.58 and 30,519.72 is: 45,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,391.72 : 156,587.58 = 30,519.72 : x
  2. Step 2: Convert to fraction form
    104,391.72/156,587.58 = 30,519.72/x
  3. Step 3: Cross multiply
    104,391.72x = 156,587.58 × 30,519.72
  4. Step 4: Simplify right side
    104,391.72x = 4,779,009,097.08
  5. Step 5: Solve for x
    x = 4,779,009,097.08/104,391.72
  6. Step 6: Final answer
    x = 45,779.58

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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.