Home / 72,281.92-99,740.10-40,442.80

Finding the Fourth Proportional to 72,281.92, 99,740.10 and 40,442.80

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Solution

The fourth proportional to 72,281.92, 99,740.10 and 40,442.80 is: 55,806.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,281.92 : 99,740.10 = 40,442.80 : x
  2. Step 2: Convert to fraction form
    72,281.92/99,740.10 = 40,442.80/x
  3. Step 3: Cross multiply
    72,281.92x = 99,740.10 × 40,442.80
  4. Step 4: Simplify right side
    72,281.92x = 4,033,768,916.28
  5. Step 5: Solve for x
    x = 4,033,768,916.28/72,281.92
  6. Step 6: Final answer
    x = 55,806.06

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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.