Home / 42,729.60-64,094.40-18,102.40

Finding the Fourth Proportional to 42,729.60, 64,094.40 and 18,102.40

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Solution

The fourth proportional to 42,729.60, 64,094.40 and 18,102.40 is: 27,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.60 : 64,094.40 = 18,102.40 : x
  2. Step 2: Convert to fraction form
    42,729.60/64,094.40 = 18,102.40/x
  3. Step 3: Cross multiply
    42,729.60x = 64,094.40 × 18,102.40
  4. Step 4: Simplify right side
    42,729.60x = 1,160,262,466.56
  5. Step 5: Solve for x
    x = 1,160,262,466.56/42,729.60
  6. Step 6: Final answer
    x = 27,153.60

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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.