Home / 79,148.16-118,636.80-39,626.88

Finding the Fourth Proportional to 79,148.16, 118,636.80 and 39,626.88

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Solution

The fourth proportional to 79,148.16, 118,636.80 and 39,626.88 is: 59,397.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,148.16 : 118,636.80 = 39,626.88 : x
  2. Step 2: Convert to fraction form
    79,148.16/118,636.80 = 39,626.88/x
  3. Step 3: Cross multiply
    79,148.16x = 118,636.80 × 39,626.88
  4. Step 4: Simplify right side
    79,148.16x = 4,701,206,237.18
  5. Step 5: Solve for x
    x = 4,701,206,237.18/79,148.16
  6. Step 6: Final answer
    x = 59,397.54

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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.