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Finding the Fourth Proportional to 66,547.45, 91,831.60 and 36,326.75

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Solution

The fourth proportional to 66,547.45, 91,831.60 and 36,326.75 is: 50,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,547.45 : 91,831.60 = 36,326.75 : x
  2. Step 2: Convert to fraction form
    66,547.45/91,831.60 = 36,326.75/x
  3. Step 3: Cross multiply
    66,547.45x = 91,831.60 × 36,326.75
  4. Step 4: Simplify right side
    66,547.45x = 3,335,943,575.30
  5. Step 5: Solve for x
    x = 3,335,943,575.30/66,547.45
  6. Step 6: Final answer
    x = 50,128.80

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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.