Home / 72,870,605.66-100,561,350.60-39,831,071.78

Finding the Fourth Proportional to 72,870,605.66, 100,561,350.60 and 39,831,071.78

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Solution

The fourth proportional to 72,870,605.66, 100,561,350.60 and 39,831,071.78 is: 54,966,832.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,870,605.66 : 100,561,350.60 = 39,831,071.78 : x
  2. Step 2: Convert to fraction form
    72,870,605.66/100,561,350.60 = 39,831,071.78/x
  3. Step 3: Cross multiply
    72,870,605.66x = 100,561,350.60 × 39,831,071.78
  4. Step 4: Simplify right side
    72,870,605.66x = 4,005,466,374,042,346
  5. Step 5: Solve for x
    x = 4,005,466,374,042,346/72,870,605.66
  6. Step 6: Final answer
    x = 54,966,832.48

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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.