Home / 72,870,607.66-100,561,353.36-39,831,073.78

Finding the Fourth Proportional to 72,870,607.66, 100,561,353.36 and 39,831,073.78

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Solution

The fourth proportional to 72,870,607.66, 100,561,353.36 and 39,831,073.78 is: 54,966,835.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,870,607.66 : 100,561,353.36 = 39,831,073.78 : x
  2. Step 2: Convert to fraction form
    72,870,607.66/100,561,353.36 = 39,831,073.78/x
  3. Step 3: Cross multiply
    72,870,607.66x = 100,561,353.36 × 39,831,073.78
  4. Step 4: Simplify right side
    72,870,607.66x = 4,005,466,685,098,811
  5. Step 5: Solve for x
    x = 4,005,466,685,098,811/72,870,607.66
  6. Step 6: Final answer
    x = 54,966,835.24

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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.