Home / 81,631.04-112,666.56-47,643.52

Finding the Fourth Proportional to 81,631.04, 112,666.56 and 47,643.52

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Solution

The fourth proportional to 81,631.04, 112,666.56 and 47,643.52 is: 65,757.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,631.04 : 112,666.56 = 47,643.52 : x
  2. Step 2: Convert to fraction form
    81,631.04/112,666.56 = 47,643.52/x
  3. Step 3: Cross multiply
    81,631.04x = 112,666.56 × 47,643.52
  4. Step 4: Simplify right side
    81,631.04x = 5,367,831,504.69
  5. Step 5: Solve for x
    x = 5,367,831,504.69/81,631.04
  6. Step 6: Final answer
    x = 65,757.24

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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.