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Finding the Fourth Proportional to 75,648.40, 113,472.60 and 25,784.80

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Solution

The fourth proportional to 75,648.40, 113,472.60 and 25,784.80 is: 38,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,648.40 : 113,472.60 = 25,784.80 : x
  2. Step 2: Convert to fraction form
    75,648.40/113,472.60 = 25,784.80/x
  3. Step 3: Cross multiply
    75,648.40x = 113,472.60 × 25,784.80
  4. Step 4: Simplify right side
    75,648.40x = 2,925,868,296.48
  5. Step 5: Solve for x
    x = 2,925,868,296.48/75,648.40
  6. Step 6: Final answer
    x = 38,677.20

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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.