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Finding the Fourth Proportional to 66,007.51, 91,066.44 and 43,358.69

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Solution

The fourth proportional to 66,007.51, 91,066.44 and 43,358.69 is: 59,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,007.51 : 91,066.44 = 43,358.69 : x
  2. Step 2: Convert to fraction form
    66,007.51/91,066.44 = 43,358.69/x
  3. Step 3: Cross multiply
    66,007.51x = 91,066.44 × 43,358.69
  4. Step 4: Simplify right side
    66,007.51x = 3,948,521,931.62
  5. Step 5: Solve for x
    x = 3,948,521,931.62/66,007.51
  6. Step 6: Final answer
    x = 59,819.29

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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.