Home / 47,746.28-71,613.96-12,688.64

Finding the Fourth Proportional to 47,746.28, 71,613.96 and 12,688.64

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Solution

The fourth proportional to 47,746.28, 71,613.96 and 12,688.64 is: 19,031.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,746.28 : 71,613.96 = 12,688.64 : x
  2. Step 2: Convert to fraction form
    47,746.28/71,613.96 = 12,688.64/x
  3. Step 3: Cross multiply
    47,746.28x = 71,613.96 × 12,688.64
  4. Step 4: Simplify right side
    47,746.28x = 908,683,757.41
  5. Step 5: Solve for x
    x = 908,683,757.41/47,746.28
  6. Step 6: Final answer
    x = 19,031.51

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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.