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Finding the Fourth Proportional to 45,487.40, 68,133.90 and 37,711.40

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Solution

The fourth proportional to 45,487.40, 68,133.90 and 37,711.40 is: 56,486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,487.40 : 68,133.90 = 37,711.40 : x
  2. Step 2: Convert to fraction form
    45,487.40/68,133.90 = 37,711.40/x
  3. Step 3: Cross multiply
    45,487.40x = 68,133.90 × 37,711.40
  4. Step 4: Simplify right side
    45,487.40x = 2,569,424,756.46
  5. Step 5: Solve for x
    x = 2,569,424,756.46/45,487.40
  6. Step 6: Final answer
    x = 56,486.52

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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.