Home / 66,783.28-92,155.44-38,490.88

Finding the Fourth Proportional to 66,783.28, 92,155.44 and 38,490.88

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Solution

The fourth proportional to 66,783.28, 92,155.44 and 38,490.88 is: 53,114.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,783.28 : 92,155.44 = 38,490.88 : x
  2. Step 2: Convert to fraction form
    66,783.28/92,155.44 = 38,490.88/x
  3. Step 3: Cross multiply
    66,783.28x = 92,155.44 × 38,490.88
  4. Step 4: Simplify right side
    66,783.28x = 3,547,143,982.39
  5. Step 5: Solve for x
    x = 3,547,143,982.39/66,783.28
  6. Step 6: Final answer
    x = 53,114.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.