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Finding the Fourth Proportional to 72,595.16, 100,137.87 and 45,690.96

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Solution

The fourth proportional to 72,595.16, 100,137.87 and 45,690.96 is: 63,026.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,595.16 : 100,137.87 = 45,690.96 : x
  2. Step 2: Convert to fraction form
    72,595.16/100,137.87 = 45,690.96/x
  3. Step 3: Cross multiply
    72,595.16x = 100,137.87 × 45,690.96
  4. Step 4: Simplify right side
    72,595.16x = 4,575,395,412.66
  5. Step 5: Solve for x
    x = 4,575,395,412.66/72,595.16
  6. Step 6: Final answer
    x = 63,026.18

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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.