Home / 74,430.78-102,714.12-40,439.04

Finding the Fourth Proportional to 74,430.78, 102,714.12 and 40,439.04

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Solution

The fourth proportional to 74,430.78, 102,714.12 and 40,439.04 is: 55,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,430.78 : 102,714.12 = 40,439.04 : x
  2. Step 2: Convert to fraction form
    74,430.78/102,714.12 = 40,439.04/x
  3. Step 3: Cross multiply
    74,430.78x = 102,714.12 × 40,439.04
  4. Step 4: Simplify right side
    74,430.78x = 4,153,660,407.24
  5. Step 5: Solve for x
    x = 4,153,660,407.24/74,430.78
  6. Step 6: Final answer
    x = 55,805.68

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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.