Home / 42,688.22-64,055.61-28,659.96

Finding the Fourth Proportional to 42,688.22, 64,055.61 and 28,659.96

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Solution

The fourth proportional to 42,688.22, 64,055.61 and 28,659.96 is: 43,005.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,688.22 : 64,055.61 = 28,659.96 : x
  2. Step 2: Convert to fraction form
    42,688.22/64,055.61 = 28,659.96/x
  3. Step 3: Cross multiply
    42,688.22x = 64,055.61 × 28,659.96
  4. Step 4: Simplify right side
    42,688.22x = 1,835,831,220.38
  5. Step 5: Solve for x
    x = 1,835,831,220.38/42,688.22
  6. Step 6: Final answer
    x = 43,005.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.