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Finding the Fourth Proportional to 74,648.28, 103,028.04 and 42,827.70

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Solution

The fourth proportional to 74,648.28, 103,028.04 and 42,827.70 is: 59,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,648.28 : 103,028.04 = 42,827.70 : x
  2. Step 2: Convert to fraction form
    74,648.28/103,028.04 = 42,827.70/x
  3. Step 3: Cross multiply
    74,648.28x = 103,028.04 × 42,827.70
  4. Step 4: Simplify right side
    74,648.28x = 4,412,453,988.71
  5. Step 5: Solve for x
    x = 4,412,453,988.71/74,648.28
  6. Step 6: Final answer
    x = 59,109.92

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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.