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Finding the Fourth Proportional to 78,290.76, 108,069.27 and 46,459.65

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Solution

The fourth proportional to 78,290.76, 108,069.27 and 46,459.65 is: 64,130.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,290.76 : 108,069.27 = 46,459.65 : x
  2. Step 2: Convert to fraction form
    78,290.76/108,069.27 = 46,459.65/x
  3. Step 3: Cross multiply
    78,290.76x = 108,069.27 × 46,459.65
  4. Step 4: Simplify right side
    78,290.76x = 5,020,860,459.96
  5. Step 5: Solve for x
    x = 5,020,860,459.96/78,290.76
  6. Step 6: Final answer
    x = 64,130.95

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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.