Home / 76,988.16-106,317.03-72,795.05

Finding the Fourth Proportional to 76,988.16, 106,317.03 and 72,795.05

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Solution

The fourth proportional to 76,988.16, 106,317.03 and 72,795.05 is: 100,526.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,988.16 : 106,317.03 = 72,795.05 : x
  2. Step 2: Convert to fraction form
    76,988.16/106,317.03 = 72,795.05/x
  3. Step 3: Cross multiply
    76,988.16x = 106,317.03 × 72,795.05
  4. Step 4: Simplify right side
    76,988.16x = 7,739,352,983.12
  5. Step 5: Solve for x
    x = 7,739,352,983.12/76,988.16
  6. Step 6: Final answer
    x = 100,526.54

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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.