Home / 81,487.23-112,452.64-45,191.28

Finding the Fourth Proportional to 81,487.23, 112,452.64 and 45,191.28

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Solution

The fourth proportional to 81,487.23, 112,452.64 and 45,191.28 is: 62,364.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,487.23 : 112,452.64 = 45,191.28 : x
  2. Step 2: Convert to fraction form
    81,487.23/112,452.64 = 45,191.28/x
  3. Step 3: Cross multiply
    81,487.23x = 112,452.64 × 45,191.28
  4. Step 4: Simplify right side
    81,487.23x = 5,081,878,740.98
  5. Step 5: Solve for x
    x = 5,081,878,740.98/81,487.23
  6. Step 6: Final answer
    x = 62,364.11

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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.