Home / 81,208.90-112,068.93-45,400.42

Finding the Fourth Proportional to 81,208.90, 112,068.93 and 45,400.42

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Solution

The fourth proportional to 81,208.90, 112,068.93 and 45,400.42 is: 62,652.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,208.90 : 112,068.93 = 45,400.42 : x
  2. Step 2: Convert to fraction form
    81,208.90/112,068.93 = 45,400.42/x
  3. Step 3: Cross multiply
    81,208.90x = 112,068.93 × 45,400.42
  4. Step 4: Simplify right side
    81,208.90x = 5,087,976,490.95
  5. Step 5: Solve for x
    x = 5,087,976,490.95/81,208.90
  6. Step 6: Final answer
    x = 62,652.94

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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.