Home / 89,393.71-134,145.93-51,971.39

Finding the Fourth Proportional to 89,393.71, 134,145.93 and 51,971.39

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Solution

The fourth proportional to 89,393.71, 134,145.93 and 51,971.39 is: 77,989.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,393.71 : 134,145.93 = 51,971.39 : x
  2. Step 2: Convert to fraction form
    89,393.71/134,145.93 = 51,971.39/x
  3. Step 3: Cross multiply
    89,393.71x = 134,145.93 × 51,971.39
  4. Step 4: Simplify right side
    89,393.71x = 6,971,750,444.94
  5. Step 5: Solve for x
    x = 6,971,750,444.94/89,393.71
  6. Step 6: Final answer
    x = 77,989.28

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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.