Home / 42,759.04-64,139.64-20,264.44

Finding the Fourth Proportional to 42,759.04, 64,139.64 and 20,264.44

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Solution

The fourth proportional to 42,759.04, 64,139.64 and 20,264.44 is: 30,397.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,759.04 : 64,139.64 = 20,264.44 : x
  2. Step 2: Convert to fraction form
    42,759.04/64,139.64 = 20,264.44/x
  3. Step 3: Cross multiply
    42,759.04x = 64,139.64 × 20,264.44
  4. Step 4: Simplify right side
    42,759.04x = 1,299,753,886.40
  5. Step 5: Solve for x
    x = 1,299,753,886.40/42,759.04
  6. Step 6: Final answer
    x = 30,397.17

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1.5x scale

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.