Home / 78,088.64-107,688.56-51,254.42

Finding the Fourth Proportional to 78,088.64, 107,688.56 and 51,254.42

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Solution

The fourth proportional to 78,088.64, 107,688.56 and 51,254.42 is: 70,682.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,088.64 : 107,688.56 = 51,254.42 : x
  2. Step 2: Convert to fraction form
    78,088.64/107,688.56 = 51,254.42/x
  3. Step 3: Cross multiply
    78,088.64x = 107,688.56 × 51,254.42
  4. Step 4: Simplify right side
    78,088.64x = 5,519,514,683.44
  5. Step 5: Solve for x
    x = 5,519,514,683.44/78,088.64
  6. Step 6: Final answer
    x = 70,682.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.