Home / 72,001.77-99,358.81-40,164.52

Finding the Fourth Proportional to 72,001.77, 99,358.81 and 40,164.52

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Solution

The fourth proportional to 72,001.77, 99,358.81 and 40,164.52 is: 55,425.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.77 : 99,358.81 = 40,164.52 : x
  2. Step 2: Convert to fraction form
    72,001.77/99,358.81 = 40,164.52/x
  3. Step 3: Cross multiply
    72,001.77x = 99,358.81 × 40,164.52
  4. Step 4: Simplify right side
    72,001.77x = 3,990,698,911.42
  5. Step 5: Solve for x
    x = 3,990,698,911.42/72,001.77
  6. Step 6: Final answer
    x = 55,425.01

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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.