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Finding the Fourth Proportional to 78,762.16, 118,143.68 and 19,597.84

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Solution

The fourth proportional to 78,762.16, 118,143.68 and 19,597.84 is: 29,396.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,762.16 : 118,143.68 = 19,597.84 : x
  2. Step 2: Convert to fraction form
    78,762.16/118,143.68 = 19,597.84/x
  3. Step 3: Cross multiply
    78,762.16x = 118,143.68 × 19,597.84
  4. Step 4: Simplify right side
    78,762.16x = 2,315,360,937.65
  5. Step 5: Solve for x
    x = 2,315,360,937.65/78,762.16
  6. Step 6: Final answer
    x = 29,396.87

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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.