Home / 72,183,532.40-99,613,301.28-39,143,772.87

Finding the Fourth Proportional to 72,183,532.40, 99,613,301.28 and 39,143,772.87

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Solution

The fourth proportional to 72,183,532.40, 99,613,301.28 and 39,143,772.87 is: 54,018,420.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,183,532.40 : 99,613,301.28 = 39,143,772.87 : x
  2. Step 2: Convert to fraction form
    72,183,532.40/99,613,301.28 = 39,143,772.87/x
  3. Step 3: Cross multiply
    72,183,532.40x = 99,613,301.28 × 39,143,772.87
  4. Step 4: Simplify right side
    72,183,532.40x = 3,899,240,440,135,200
  5. Step 5: Solve for x
    x = 3,899,240,440,135,200/72,183,532.40
  6. Step 6: Final answer
    x = 54,018,420.97

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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.