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Finding the Fourth Proportional to 99,959.87, 137,944.74 and 57,526.67

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Solution

The fourth proportional to 99,959.87, 137,944.74 and 57,526.67 is: 79,386.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,959.87 : 137,944.74 = 57,526.67 : x
  2. Step 2: Convert to fraction form
    99,959.87/137,944.74 = 57,526.67/x
  3. Step 3: Cross multiply
    99,959.87x = 137,944.74 × 57,526.67
  4. Step 4: Simplify right side
    99,959.87x = 7,935,500,846.49
  5. Step 5: Solve for x
    x = 7,935,500,846.49/99,959.87
  6. Step 6: Final answer
    x = 79,386.87

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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.