Home / 88,007.60-121,371.72-69,111.92

Finding the Fourth Proportional to 88,007.60, 121,371.72 and 69,111.92

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Solution

The fourth proportional to 88,007.60, 121,371.72 and 69,111.92 is: 95,312.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,007.60 : 121,371.72 = 69,111.92 : x
  2. Step 2: Convert to fraction form
    88,007.60/121,371.72 = 69,111.92/x
  3. Step 3: Cross multiply
    88,007.60x = 121,371.72 × 69,111.92
  4. Step 4: Simplify right side
    88,007.60x = 8,388,232,602.90
  5. Step 5: Solve for x
    x = 8,388,232,602.90/88,007.60
  6. Step 6: Final answer
    x = 95,312.59

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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.