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Finding the Fourth Proportional to 107,931.29, 161,919 and 37,859.81

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Solution

The fourth proportional to 107,931.29, 161,919 and 37,859.81 is: 56,797.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,931.29 : 161,919 = 37,859.81 : x
  2. Step 2: Convert to fraction form
    107,931.29/161,919 = 37,859.81/x
  3. Step 3: Cross multiply
    107,931.29x = 161,919 × 37,859.81
  4. Step 4: Simplify right side
    107,931.29x = 6,130,221,765.80
  5. Step 5: Solve for x
    x = 6,130,221,765.80/107,931.29
  6. Step 6: Final answer
    x = 56,797.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.