Home / 42,972.64-64,457.94-25,315.28

Finding the Fourth Proportional to 42,972.64, 64,457.94 and 25,315.28

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Solution

The fourth proportional to 42,972.64, 64,457.94 and 25,315.28 is: 37,972.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,972.64 : 64,457.94 = 25,315.28 : x
  2. Step 2: Convert to fraction form
    42,972.64/64,457.94 = 25,315.28/x
  3. Step 3: Cross multiply
    42,972.64x = 64,457.94 × 25,315.28
  4. Step 4: Simplify right side
    42,972.64x = 1,631,770,799.32
  5. Step 5: Solve for x
    x = 1,631,770,799.32/42,972.64
  6. Step 6: Final answer
    x = 37,972.32

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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.