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Finding the Fourth Proportional to 75,663.60, 113,495.40 and 64,388.40

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Solution

The fourth proportional to 75,663.60, 113,495.40 and 64,388.40 is: 96,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,663.60 : 113,495.40 = 64,388.40 : x
  2. Step 2: Convert to fraction form
    75,663.60/113,495.40 = 64,388.40/x
  3. Step 3: Cross multiply
    75,663.60x = 113,495.40 × 64,388.40
  4. Step 4: Simplify right side
    75,663.60x = 7,307,787,213.36
  5. Step 5: Solve for x
    x = 7,307,787,213.36/75,663.60
  6. Step 6: Final answer
    x = 96,582.60

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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.