Home / 76,740.40-105,918.08-51,575.32

Finding the Fourth Proportional to 76,740.40, 105,918.08 and 51,575.32

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Solution

The fourth proportional to 76,740.40, 105,918.08 and 51,575.32 is: 71,184.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,740.40 : 105,918.08 = 51,575.32 : x
  2. Step 2: Convert to fraction form
    76,740.40/105,918.08 = 51,575.32/x
  3. Step 3: Cross multiply
    76,740.40x = 105,918.08 × 51,575.32
  4. Step 4: Simplify right side
    76,740.40x = 5,462,758,869.79
  5. Step 5: Solve for x
    x = 5,462,758,869.79/76,740.40
  6. Step 6: Final answer
    x = 71,184.92

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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.