Home / 85,116.66-127,480.41-40,774.74

Finding the Fourth Proportional to 85,116.66, 127,480.41 and 40,774.74

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Solution

The fourth proportional to 85,116.66, 127,480.41 and 40,774.74 is: 61,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,116.66 : 127,480.41 = 40,774.74 : x
  2. Step 2: Convert to fraction form
    85,116.66/127,480.41 = 40,774.74/x
  3. Step 3: Cross multiply
    85,116.66x = 127,480.41 × 40,774.74
  4. Step 4: Simplify right side
    85,116.66x = 5,197,980,572.84
  5. Step 5: Solve for x
    x = 5,197,980,572.84/85,116.66
  6. Step 6: Final answer
    x = 61,068.90

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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.