Home / 74,883.18-103,348.83-72,421.62

Finding the Fourth Proportional to 74,883.18, 103,348.83 and 72,421.62

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Solution

The fourth proportional to 74,883.18, 103,348.83 and 72,421.62 is: 99,951.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,883.18 : 103,348.83 = 72,421.62 : x
  2. Step 2: Convert to fraction form
    74,883.18/103,348.83 = 72,421.62/x
  3. Step 3: Cross multiply
    74,883.18x = 103,348.83 × 72,421.62
  4. Step 4: Simplify right side
    74,883.18x = 7,484,689,693.70
  5. Step 5: Solve for x
    x = 7,484,689,693.70/74,883.18
  6. Step 6: Final answer
    x = 99,951.55

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1.5x scale

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.