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Finding the Fourth Proportional to 74,863.60, 103,307.34 and 40,865.32

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Solution

The fourth proportional to 74,863.60, 103,307.34 and 40,865.32 is: 56,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,863.60 : 103,307.34 = 40,865.32 : x
  2. Step 2: Convert to fraction form
    74,863.60/103,307.34 = 40,865.32/x
  3. Step 3: Cross multiply
    74,863.60x = 103,307.34 × 40,865.32
  4. Step 4: Simplify right side
    74,863.60x = 4,221,687,507.45
  5. Step 5: Solve for x
    x = 4,221,687,507.45/74,863.60
  6. Step 6: Final answer
    x = 56,391.72

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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.