Home / 81,014.10-121,521.15-49,521.30

Finding the Fourth Proportional to 81,014.10, 121,521.15 and 49,521.30

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Solution

The fourth proportional to 81,014.10, 121,521.15 and 49,521.30 is: 74,281.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,014.10 : 121,521.15 = 49,521.30 : x
  2. Step 2: Convert to fraction form
    81,014.10/121,521.15 = 49,521.30/x
  3. Step 3: Cross multiply
    81,014.10x = 121,521.15 × 49,521.30
  4. Step 4: Simplify right side
    81,014.10x = 6,017,885,325.50
  5. Step 5: Solve for x
    x = 6,017,885,325.50/81,014.10
  6. Step 6: Final answer
    x = 74,281.95

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Double scale
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Similar ratio
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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.