Home / 72,001.44-99,358.32-39,741.72

Finding the Fourth Proportional to 72,001.44, 99,358.32 and 39,741.72

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Solution

The fourth proportional to 72,001.44, 99,358.32 and 39,741.72 is: 54,841.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.44 : 99,358.32 = 39,741.72 : x
  2. Step 2: Convert to fraction form
    72,001.44/99,358.32 = 39,741.72/x
  3. Step 3: Cross multiply
    72,001.44x = 99,358.32 × 39,741.72
  4. Step 4: Simplify right side
    72,001.44x = 3,948,670,533.11
  5. Step 5: Solve for x
    x = 3,948,670,533.11/72,001.44
  6. Step 6: Final answer
    x = 54,841.55

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Double scale
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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.