Home / 72,207.81-99,647.01-40,384.26

Finding the Fourth Proportional to 72,207.81, 99,647.01 and 40,384.26

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Solution

The fourth proportional to 72,207.81, 99,647.01 and 40,384.26 is: 55,730.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,207.81 : 99,647.01 = 40,384.26 : x
  2. Step 2: Convert to fraction form
    72,207.81/99,647.01 = 40,384.26/x
  3. Step 3: Cross multiply
    72,207.81x = 99,647.01 × 40,384.26
  4. Step 4: Simplify right side
    72,207.81x = 4,024,170,760.06
  5. Step 5: Solve for x
    x = 4,024,170,760.06/72,207.81
  6. Step 6: Final answer
    x = 55,730.41

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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.