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Finding the Fourth Proportional to 29,071.68, 40,112.72 and 17,130.72

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Solution

The fourth proportional to 29,071.68, 40,112.72 and 17,130.72 is: 23,636.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,071.68 : 40,112.72 = 17,130.72 : x
  2. Step 2: Convert to fraction form
    29,071.68/40,112.72 = 17,130.72/x
  3. Step 3: Cross multiply
    29,071.68x = 40,112.72 × 17,130.72
  4. Step 4: Simplify right side
    29,071.68x = 687,159,774.76
  5. Step 5: Solve for x
    x = 687,159,774.76/29,071.68
  6. Step 6: Final answer
    x = 23,636.74

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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.