Home / 78,812.48-118,237.55-26,222.42

Finding the Fourth Proportional to 78,812.48, 118,237.55 and 26,222.42

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Solution

The fourth proportional to 78,812.48, 118,237.55 and 26,222.42 is: 39,339.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,812.48 : 118,237.55 = 26,222.42 : x
  2. Step 2: Convert to fraction form
    78,812.48/118,237.55 = 26,222.42/x
  3. Step 3: Cross multiply
    78,812.48x = 118,237.55 × 26,222.42
  4. Step 4: Simplify right side
    78,812.48x = 3,100,473,973.57
  5. Step 5: Solve for x
    x = 3,100,473,973.57/78,812.48
  6. Step 6: Final answer
    x = 39,339.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.