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Finding the Fourth Proportional to 78,762.73, 118,143.84 and 19,598.39

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Solution

The fourth proportional to 78,762.73, 118,143.84 and 19,598.39 is: 29,397.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,762.73 : 118,143.84 = 19,598.39 : x
  2. Step 2: Convert to fraction form
    78,762.73/118,143.84 = 19,598.39/x
  3. Step 3: Cross multiply
    78,762.73x = 118,143.84 × 19,598.39
  4. Step 4: Simplify right side
    78,762.73x = 2,315,429,052.42
  5. Step 5: Solve for x
    x = 2,315,429,052.42/78,762.73
  6. Step 6: Final answer
    x = 29,397.52

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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.