Home / 78,281.04-117,287.34-52,587.21

Finding the Fourth Proportional to 78,281.04, 117,287.34 and 52,587.21

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Solution

The fourth proportional to 78,281.04, 117,287.34 and 52,587.21 is: 78,790.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,281.04 : 117,287.34 = 52,587.21 : x
  2. Step 2: Convert to fraction form
    78,281.04/117,287.34 = 52,587.21/x
  3. Step 3: Cross multiply
    78,281.04x = 117,287.34 × 52,587.21
  4. Step 4: Simplify right side
    78,281.04x = 6,167,813,978.92
  5. Step 5: Solve for x
    x = 6,167,813,978.92/78,281.04
  6. Step 6: Final answer
    x = 78,790.65

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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.