Home / 72,225.90-99,676.79-40,397.74

Finding the Fourth Proportional to 72,225.90, 99,676.79 and 40,397.74

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Solution

The fourth proportional to 72,225.90, 99,676.79 and 40,397.74 is: 55,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,225.90 : 99,676.79 = 40,397.74 : x
  2. Step 2: Convert to fraction form
    72,225.90/99,676.79 = 40,397.74/x
  3. Step 3: Cross multiply
    72,225.90x = 99,676.79 × 40,397.74
  4. Step 4: Simplify right side
    72,225.90x = 4,026,717,046.45
  5. Step 5: Solve for x
    x = 4,026,717,046.45/72,225.90
  6. Step 6: Final answer
    x = 55,751.70

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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.