Home / 72,688.97-108,962.27-40,683.67

Finding the Fourth Proportional to 72,688.97, 108,962.27 and 40,683.67

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Solution

The fourth proportional to 72,688.97, 108,962.27 and 40,683.67 is: 60,985.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,688.97 : 108,962.27 = 40,683.67 : x
  2. Step 2: Convert to fraction form
    72,688.97/108,962.27 = 40,683.67/x
  3. Step 3: Cross multiply
    72,688.97x = 108,962.27 × 40,683.67
  4. Step 4: Simplify right side
    72,688.97x = 4,432,984,831.71
  5. Step 5: Solve for x
    x = 4,432,984,831.71/72,688.97
  6. Step 6: Final answer
    x = 60,985.66

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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.