Home / 92,979.78-128,322.88-52,155.14

Finding the Fourth Proportional to 92,979.78, 128,322.88 and 52,155.14

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Solution

The fourth proportional to 92,979.78, 128,322.88 and 52,155.14 is: 71,980.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,979.78 : 128,322.88 = 52,155.14 : x
  2. Step 2: Convert to fraction form
    92,979.78/128,322.88 = 52,155.14/x
  3. Step 3: Cross multiply
    92,979.78x = 128,322.88 × 52,155.14
  4. Step 4: Simplify right side
    92,979.78x = 6,692,698,171.64
  5. Step 5: Solve for x
    x = 6,692,698,171.64/92,979.78
  6. Step 6: Final answer
    x = 71,980.14

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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.