Home / 78,088.90-107,944.28-69,674.43

Finding the Fourth Proportional to 78,088.90, 107,944.28 and 69,674.43

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Solution

The fourth proportional to 78,088.90, 107,944.28 and 69,674.43 is: 96,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,088.90 : 107,944.28 = 69,674.43 : x
  2. Step 2: Convert to fraction form
    78,088.90/107,944.28 = 69,674.43/x
  3. Step 3: Cross multiply
    78,088.90x = 107,944.28 × 69,674.43
  4. Step 4: Simplify right side
    78,088.90x = 7,520,956,180.76
  5. Step 5: Solve for x
    x = 7,520,956,180.76/78,088.90
  6. Step 6: Final answer
    x = 96,312.74

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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.