Home / 78,386.34-108,176.88-48,172.92

Finding the Fourth Proportional to 78,386.34, 108,176.88 and 48,172.92

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Solution

The fourth proportional to 78,386.34, 108,176.88 and 48,172.92 is: 66,480.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,386.34 : 108,176.88 = 48,172.92 : x
  2. Step 2: Convert to fraction form
    78,386.34/108,176.88 = 48,172.92/x
  3. Step 3: Cross multiply
    78,386.34x = 108,176.88 × 48,172.92
  4. Step 4: Simplify right side
    78,386.34x = 5,211,196,186.09
  5. Step 5: Solve for x
    x = 5,211,196,186.09/78,386.34
  6. Step 6: Final answer
    x = 66,480.92

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1.5x scale

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.