Home / 88,211.28-121,732.40-47,925.36

Finding the Fourth Proportional to 88,211.28, 121,732.40 and 47,925.36

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Solution

The fourth proportional to 88,211.28, 121,732.40 and 47,925.36 is: 66,137.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,211.28 : 121,732.40 = 47,925.36 : x
  2. Step 2: Convert to fraction form
    88,211.28/121,732.40 = 47,925.36/x
  3. Step 3: Cross multiply
    88,211.28x = 121,732.40 × 47,925.36
  4. Step 4: Simplify right side
    88,211.28x = 5,834,069,093.66
  5. Step 5: Solve for x
    x = 5,834,069,093.66/88,211.28
  6. Step 6: Final answer
    x = 66,137.45

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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.