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Finding the Fourth Proportional to 98,963.04, 148,407.72 and 39,778.80

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Solution

The fourth proportional to 98,963.04, 148,407.72 and 39,778.80 is: 59,653.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,963.04 : 148,407.72 = 39,778.80 : x
  2. Step 2: Convert to fraction form
    98,963.04/148,407.72 = 39,778.80/x
  3. Step 3: Cross multiply
    98,963.04x = 148,407.72 × 39,778.80
  4. Step 4: Simplify right side
    98,963.04x = 5,903,481,012.34
  5. Step 5: Solve for x
    x = 5,903,481,012.34/98,963.04
  6. Step 6: Final answer
    x = 59,653.39

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1.5x scale

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.