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Finding the Fourth Proportional to 74,733.60, 112,100.40 and 27,980.40

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Solution

The fourth proportional to 74,733.60, 112,100.40 and 27,980.40 is: 41,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,733.60 : 112,100.40 = 27,980.40 : x
  2. Step 2: Convert to fraction form
    74,733.60/112,100.40 = 27,980.40/x
  3. Step 3: Cross multiply
    74,733.60x = 112,100.40 × 27,980.40
  4. Step 4: Simplify right side
    74,733.60x = 3,136,614,032.16
  5. Step 5: Solve for x
    x = 3,136,614,032.16/74,733.60
  6. Step 6: Final answer
    x = 41,970.60

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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.