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Finding the Fourth Proportional to 74,732.60, 112,098.90 and 27,979.40

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Solution

The fourth proportional to 74,732.60, 112,098.90 and 27,979.40 is: 41,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,732.60 : 112,098.90 = 27,979.40 : x
  2. Step 2: Convert to fraction form
    74,732.60/112,098.90 = 27,979.40/x
  3. Step 3: Cross multiply
    74,732.60x = 112,098.90 × 27,979.40
  4. Step 4: Simplify right side
    74,732.60x = 3,136,459,962.66
  5. Step 5: Solve for x
    x = 3,136,459,962.66/74,732.60
  6. Step 6: Final answer
    x = 41,969.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.