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Finding the Fourth Proportional to 74,677.60, 103,018.80 and 47,798.56

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Solution

The fourth proportional to 74,677.60, 103,018.80 and 47,798.56 is: 65,938.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,677.60 : 103,018.80 = 47,798.56 : x
  2. Step 2: Convert to fraction form
    74,677.60/103,018.80 = 47,798.56/x
  3. Step 3: Cross multiply
    74,677.60x = 103,018.80 × 47,798.56
  4. Step 4: Simplify right side
    74,677.60x = 4,924,150,292.93
  5. Step 5: Solve for x
    x = 4,924,150,292.93/74,677.60
  6. Step 6: Final answer
    x = 65,938.79

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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.