Home / 45,123.50-67,685.25-12,291.50

Finding the Fourth Proportional to 45,123.50, 67,685.25 and 12,291.50

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Solution

The fourth proportional to 45,123.50, 67,685.25 and 12,291.50 is: 18,437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,123.50 : 67,685.25 = 12,291.50 : x
  2. Step 2: Convert to fraction form
    45,123.50/67,685.25 = 12,291.50/x
  3. Step 3: Cross multiply
    45,123.50x = 67,685.25 × 12,291.50
  4. Step 4: Simplify right side
    45,123.50x = 831,953,250.38
  5. Step 5: Solve for x
    x = 831,953,250.38/45,123.50
  6. Step 6: Final answer
    x = 18,437.25

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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.