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Finding the Fourth Proportional to 74,330.79, 102,579.62 and 42,499.68

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Solution

The fourth proportional to 74,330.79, 102,579.62 and 42,499.68 is: 58,651.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,330.79 : 102,579.62 = 42,499.68 : x
  2. Step 2: Convert to fraction form
    74,330.79/102,579.62 = 42,499.68/x
  3. Step 3: Cross multiply
    74,330.79x = 102,579.62 × 42,499.68
  4. Step 4: Simplify right side
    74,330.79x = 4,359,600,812.02
  5. Step 5: Solve for x
    x = 4,359,600,812.02/74,330.79
  6. Step 6: Final answer
    x = 58,651.35

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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.