Home / 42,509.16-63,750.78-20,310.84

Finding the Fourth Proportional to 42,509.16, 63,750.78 and 20,310.84

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Solution

The fourth proportional to 42,509.16, 63,750.78 and 20,310.84 is: 30,460.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,509.16 : 63,750.78 = 20,310.84 : x
  2. Step 2: Convert to fraction form
    42,509.16/63,750.78 = 20,310.84/x
  3. Step 3: Cross multiply
    42,509.16x = 63,750.78 × 20,310.84
  4. Step 4: Simplify right side
    42,509.16x = 1,294,831,892.46
  5. Step 5: Solve for x
    x = 1,294,831,892.46/42,509.16
  6. Step 6: Final answer
    x = 30,460.07

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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.