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Finding the Fourth Proportional to 102,519.40, 153,750.30 and 32,420.20

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Solution

The fourth proportional to 102,519.40, 153,750.30 and 32,420.20 is: 48,621.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,519.40 : 153,750.30 = 32,420.20 : x
  2. Step 2: Convert to fraction form
    102,519.40/153,750.30 = 32,420.20/x
  3. Step 3: Cross multiply
    102,519.40x = 153,750.30 × 32,420.20
  4. Step 4: Simplify right side
    102,519.40x = 4,984,615,476.06
  5. Step 5: Solve for x
    x = 4,984,615,476.06/102,519.40
  6. Step 6: Final answer
    x = 48,621.19

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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.