Home / 66,778.08-100,167.12-38,741.28

Finding the Fourth Proportional to 66,778.08, 100,167.12 and 38,741.28

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Solution

The fourth proportional to 66,778.08, 100,167.12 and 38,741.28 is: 58,111.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,778.08 : 100,167.12 = 38,741.28 : x
  2. Step 2: Convert to fraction form
    66,778.08/100,167.12 = 38,741.28/x
  3. Step 3: Cross multiply
    66,778.08x = 100,167.12 × 38,741.28
  4. Step 4: Simplify right side
    66,778.08x = 3,880,602,442.71
  5. Step 5: Solve for x
    x = 3,880,602,442.71/66,778.08
  6. Step 6: Final answer
    x = 58,111.92

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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.