Home / 112,877.85-155,772.93-61,890.47

Finding the Fourth Proportional to 112,877.85, 155,772.93 and 61,890.47

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Solution

The fourth proportional to 112,877.85, 155,772.93 and 61,890.47 is: 85,409.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,877.85 : 155,772.93 = 61,890.47 : x
  2. Step 2: Convert to fraction form
    112,877.85/155,772.93 = 61,890.47/x
  3. Step 3: Cross multiply
    112,877.85x = 155,772.93 × 61,890.47
  4. Step 4: Simplify right side
    112,877.85x = 9,640,859,072.11
  5. Step 5: Solve for x
    x = 9,640,859,072.11/112,877.85
  6. Step 6: Final answer
    x = 85,409.66

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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.