Home / 45,123.60-67,683.88-21,448.18

Finding the Fourth Proportional to 45,123.60, 67,683.88 and 21,448.18

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Solution

The fourth proportional to 45,123.60, 67,683.88 and 21,448.18 is: 32,171.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,123.60 : 67,683.88 = 21,448.18 : x
  2. Step 2: Convert to fraction form
    45,123.60/67,683.88 = 21,448.18/x
  3. Step 3: Cross multiply
    45,123.60x = 67,683.88 × 21,448.18
  4. Step 4: Simplify right side
    45,123.60x = 1,451,696,041.34
  5. Step 5: Solve for x
    x = 1,451,696,041.34/45,123.60
  6. Step 6: Final answer
    x = 32,171.55

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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.