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Finding the Fourth Proportional to 74,660.42, 103,030.43 and 42,828.63

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Solution

The fourth proportional to 74,660.42, 103,030.43 and 42,828.63 is: 59,102.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,660.42 : 103,030.43 = 42,828.63 : x
  2. Step 2: Convert to fraction form
    74,660.42/103,030.43 = 42,828.63/x
  3. Step 3: Cross multiply
    74,660.42x = 103,030.43 × 42,828.63
  4. Step 4: Simplify right side
    74,660.42x = 4,412,651,951.07
  5. Step 5: Solve for x
    x = 4,412,651,951.07/74,660.42
  6. Step 6: Final answer
    x = 59,102.97

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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.