Home / 81,513.12-112,487.04-45,703.04

Finding the Fourth Proportional to 81,513.12, 112,487.04 and 45,703.04

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Solution

The fourth proportional to 81,513.12, 112,487.04 and 45,703.04 is: 63,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,513.12 : 112,487.04 = 45,703.04 : x
  2. Step 2: Convert to fraction form
    81,513.12/112,487.04 = 45,703.04/x
  3. Step 3: Cross multiply
    81,513.12x = 112,487.04 × 45,703.04
  4. Step 4: Simplify right side
    81,513.12x = 5,140,999,688.60
  5. Step 5: Solve for x
    x = 5,140,999,688.60/81,513.12
  6. Step 6: Final answer
    x = 63,069.60

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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.