Home / 83,428.32-115,133.95-45,702.57

Finding the Fourth Proportional to 83,428.32, 115,133.95 and 45,702.57

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Solution

The fourth proportional to 83,428.32, 115,133.95 and 45,702.57 is: 63,071.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,428.32 : 115,133.95 = 45,702.57 : x
  2. Step 2: Convert to fraction form
    83,428.32/115,133.95 = 45,702.57/x
  3. Step 3: Cross multiply
    83,428.32x = 115,133.95 × 45,702.57
  4. Step 4: Simplify right side
    83,428.32x = 5,261,916,833.58
  5. Step 5: Solve for x
    x = 5,261,916,833.58/83,428.32
  6. Step 6: Final answer
    x = 63,071.11

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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.