Home / 70,712.48-97,583.52-38,880.64

Finding the Fourth Proportional to 70,712.48, 97,583.52 and 38,880.64

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Solution

The fourth proportional to 70,712.48, 97,583.52 and 38,880.64 is: 53,655.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,712.48 : 97,583.52 = 38,880.64 : x
  2. Step 2: Convert to fraction form
    70,712.48/97,583.52 = 38,880.64/x
  3. Step 3: Cross multiply
    70,712.48x = 97,583.52 × 38,880.64
  4. Step 4: Simplify right side
    70,712.48x = 3,794,109,711.05
  5. Step 5: Solve for x
    x = 3,794,109,711.05/70,712.48
  6. Step 6: Final answer
    x = 53,655.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.