Home / 88,123.61-121,609.74-47,836.51

Finding the Fourth Proportional to 88,123.61, 121,609.74 and 47,836.51

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Solution

The fourth proportional to 88,123.61, 121,609.74 and 47,836.51 is: 66,013.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,123.61 : 121,609.74 = 47,836.51 : x
  2. Step 2: Convert to fraction form
    88,123.61/121,609.74 = 47,836.51/x
  3. Step 3: Cross multiply
    88,123.61x = 121,609.74 × 47,836.51
  4. Step 4: Simplify right side
    88,123.61x = 5,817,385,239.58
  5. Step 5: Solve for x
    x = 5,817,385,239.58/88,123.61
  6. Step 6: Final answer
    x = 66,013.92

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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.