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Finding the Fourth Proportional to 70,683.78, 106,061.56 and 47,007.80

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Solution

The fourth proportional to 70,683.78, 106,061.56 and 47,007.80 is: 70,535.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,683.78 : 106,061.56 = 47,007.80 : x
  2. Step 2: Convert to fraction form
    70,683.78/106,061.56 = 47,007.80/x
  3. Step 3: Cross multiply
    70,683.78x = 106,061.56 × 47,007.80
  4. Step 4: Simplify right side
    70,683.78x = 4,985,720,600.17
  5. Step 5: Solve for x
    x = 4,985,720,600.17/70,683.78
  6. Step 6: Final answer
    x = 70,535.57

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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.