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Finding the Fourth Proportional to 81,364.69, 112,287.50 and 45,552.57

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Solution

The fourth proportional to 81,364.69, 112,287.50 and 45,552.57 is: 62,864.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,364.69 : 112,287.50 = 45,552.57 : x
  2. Step 2: Convert to fraction form
    81,364.69/112,287.50 = 45,552.57/x
  3. Step 3: Cross multiply
    81,364.69x = 112,287.50 × 45,552.57
  4. Step 4: Simplify right side
    81,364.69x = 5,114,984,203.88
  5. Step 5: Solve for x
    x = 5,114,984,203.88/81,364.69
  6. Step 6: Final answer
    x = 62,864.91

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1.5x scale

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.