Home / 55,117.20-82,457.10-47,802.90

Finding the Fourth Proportional to 55,117.20, 82,457.10 and 47,802.90

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Solution

The fourth proportional to 55,117.20, 82,457.10 and 47,802.90 is: 71,514.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,117.20 : 82,457.10 = 47,802.90 : x
  2. Step 2: Convert to fraction form
    55,117.20/82,457.10 = 47,802.90/x
  3. Step 3: Cross multiply
    55,117.20x = 82,457.10 × 47,802.90
  4. Step 4: Simplify right side
    55,117.20x = 3,941,688,505.59
  5. Step 5: Solve for x
    x = 3,941,688,505.59/55,117.20
  6. Step 6: Final answer
    x = 71,514.67

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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.