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Finding the Fourth Proportional to 110,008.71, 165,013.70 and 39,886.20

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Solution

The fourth proportional to 110,008.71, 165,013.70 and 39,886.20 is: 59,829.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,008.71 : 165,013.70 = 39,886.20 : x
  2. Step 2: Convert to fraction form
    110,008.71/165,013.70 = 39,886.20/x
  3. Step 3: Cross multiply
    110,008.71x = 165,013.70 × 39,886.20
  4. Step 4: Simplify right side
    110,008.71x = 6,581,769,241.51
  5. Step 5: Solve for x
    x = 6,581,769,241.51/110,008.71
  6. Step 6: Final answer
    x = 59,829.53

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1.5x scale

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.