Home / 42,718.07-64,116.14-21,672.60

Finding the Fourth Proportional to 42,718.07, 64,116.14 and 21,672.60

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Solution

The fourth proportional to 42,718.07, 64,116.14 and 21,672.60 is: 32,528.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,718.07 : 64,116.14 = 21,672.60 : x
  2. Step 2: Convert to fraction form
    42,718.07/64,116.14 = 21,672.60/x
  3. Step 3: Cross multiply
    42,718.07x = 64,116.14 × 21,672.60
  4. Step 4: Simplify right side
    42,718.07x = 1,389,563,347.40
  5. Step 5: Solve for x
    x = 1,389,563,347.40/42,718.07
  6. Step 6: Final answer
    x = 32,528.71

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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.