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Finding the Fourth Proportional to 74,878.64, 103,332.88 and 40,887.82

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Solution

The fourth proportional to 74,878.64, 103,332.88 and 40,887.82 is: 56,425.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,878.64 : 103,332.88 = 40,887.82 : x
  2. Step 2: Convert to fraction form
    74,878.64/103,332.88 = 40,887.82/x
  3. Step 3: Cross multiply
    74,878.64x = 103,332.88 × 40,887.82
  4. Step 4: Simplify right side
    74,878.64x = 4,225,056,197.52
  5. Step 5: Solve for x
    x = 4,225,056,197.52/74,878.64
  6. Step 6: Final answer
    x = 56,425.39

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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.