Home / 91,725.45-126,582.40-55,421.86

Finding the Fourth Proportional to 91,725.45, 126,582.40 and 55,421.86

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Solution

The fourth proportional to 91,725.45, 126,582.40 and 55,421.86 is: 76,482.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,725.45 : 126,582.40 = 55,421.86 : x
  2. Step 2: Convert to fraction form
    91,725.45/126,582.40 = 55,421.86/x
  3. Step 3: Cross multiply
    91,725.45x = 126,582.40 × 55,421.86
  4. Step 4: Simplify right side
    91,725.45x = 7,015,432,051.26
  5. Step 5: Solve for x
    x = 7,015,432,051.26/91,725.45
  6. Step 6: Final answer
    x = 76,482.94

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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.