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Finding the Fourth Proportional to 74,397.60, 102,686.40 and 42,584.88

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Solution

The fourth proportional to 74,397.60, 102,686.40 and 42,584.88 is: 58,777.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,397.60 : 102,686.40 = 42,584.88 : x
  2. Step 2: Convert to fraction form
    74,397.60/102,686.40 = 42,584.88/x
  3. Step 3: Cross multiply
    74,397.60x = 102,686.40 × 42,584.88
  4. Step 4: Simplify right side
    74,397.60x = 4,372,888,021.63
  5. Step 5: Solve for x
    x = 4,372,888,021.63/74,397.60
  6. Step 6: Final answer
    x = 58,777.27

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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.