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Finding the Fourth Proportional to 74,656.59, 103,026.70 and 40,665.21

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Solution

The fourth proportional to 74,656.59, 103,026.70 and 40,665.21 is: 56,118.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,656.59 : 103,026.70 = 40,665.21 : x
  2. Step 2: Convert to fraction form
    74,656.59/103,026.70 = 40,665.21/x
  3. Step 3: Cross multiply
    74,656.59x = 103,026.70 × 40,665.21
  4. Step 4: Simplify right side
    74,656.59x = 4,189,602,391.11
  5. Step 5: Solve for x
    x = 4,189,602,391.11/74,656.59
  6. Step 6: Final answer
    x = 56,118.32

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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.