Home / 103,556.90-155,335.70-31,510.50

Finding the Fourth Proportional to 103,556.90, 155,335.70 and 31,510.50

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Solution

The fourth proportional to 103,556.90, 155,335.70 and 31,510.50 is: 47,265.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,556.90 : 155,335.70 = 31,510.50 : x
  2. Step 2: Convert to fraction form
    103,556.90/155,335.70 = 31,510.50/x
  3. Step 3: Cross multiply
    103,556.90x = 155,335.70 × 31,510.50
  4. Step 4: Simplify right side
    103,556.90x = 4,894,705,653.63
  5. Step 5: Solve for x
    x = 4,894,705,653.63/103,556.90
  6. Step 6: Final answer
    x = 47,265.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.