Home / 72,790.16-100,442.28-40,970

Finding the Fourth Proportional to 72,790.16, 100,442.28 and 40,970

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Solution

The fourth proportional to 72,790.16, 100,442.28 and 40,970 is: 56,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,790.16 : 100,442.28 = 40,970 : x
  2. Step 2: Convert to fraction form
    72,790.16/100,442.28 = 40,970/x
  3. Step 3: Cross multiply
    72,790.16x = 100,442.28 × 40,970
  4. Step 4: Simplify right side
    72,790.16x = 4,115,120,211.60
  5. Step 5: Solve for x
    x = 4,115,120,211.60/72,790.16
  6. Step 6: Final answer
    x = 56,534.02

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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.