Home / 74,909.80-103,497.06-74,172.52

Finding the Fourth Proportional to 74,909.80, 103,497.06 and 74,172.52

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Solution

The fourth proportional to 74,909.80, 103,497.06 and 74,172.52 is: 102,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,909.80 : 103,497.06 = 74,172.52 : x
  2. Step 2: Convert to fraction form
    74,909.80/103,497.06 = 74,172.52/x
  3. Step 3: Cross multiply
    74,909.80x = 103,497.06 × 74,172.52
  4. Step 4: Simplify right side
    74,909.80x = 7,676,637,752.79
  5. Step 5: Solve for x
    x = 7,676,637,752.79/74,909.80
  6. Step 6: Final answer
    x = 102,478.42

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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.