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Finding the Fourth Proportional to 74,937.60, 112,406.40 and 37,612.80

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Solution

The fourth proportional to 74,937.60, 112,406.40 and 37,612.80 is: 56,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,937.60 : 112,406.40 = 37,612.80 : x
  2. Step 2: Convert to fraction form
    74,937.60/112,406.40 = 37,612.80/x
  3. Step 3: Cross multiply
    74,937.60x = 112,406.40 × 37,612.80
  4. Step 4: Simplify right side
    74,937.60x = 4,227,919,441.92
  5. Step 5: Solve for x
    x = 4,227,919,441.92/74,937.60
  6. Step 6: Final answer
    x = 56,419.20

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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.