Home / 77,931.84-107,555.76-51,096.72

Finding the Fourth Proportional to 77,931.84, 107,555.76 and 51,096.72

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Solution

The fourth proportional to 77,931.84, 107,555.76 and 51,096.72 is: 70,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,931.84 : 107,555.76 = 51,096.72 : x
  2. Step 2: Convert to fraction form
    77,931.84/107,555.76 = 51,096.72/x
  3. Step 3: Cross multiply
    77,931.84x = 107,555.76 × 51,096.72
  4. Step 4: Simplify right side
    77,931.84x = 5,495,746,553.11
  5. Step 5: Solve for x
    x = 5,495,746,553.11/77,931.84
  6. Step 6: Final answer
    x = 70,519.91

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1.5x scale

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.