Home / 81,646.61-112,666.09-45,829.70

Finding the Fourth Proportional to 81,646.61, 112,666.09 and 45,829.70

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Solution

The fourth proportional to 81,646.61, 112,666.09 and 45,829.70 is: 63,241.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,646.61 : 112,666.09 = 45,829.70 : x
  2. Step 2: Convert to fraction form
    81,646.61/112,666.09 = 45,829.70/x
  3. Step 3: Cross multiply
    81,646.61x = 112,666.09 × 45,829.70
  4. Step 4: Simplify right side
    81,646.61x = 5,163,453,104.87
  5. Step 5: Solve for x
    x = 5,163,453,104.87/81,646.61
  6. Step 6: Final answer
    x = 63,241.49

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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.