Home / 42,962.81-64,411.80-28,175.45

Finding the Fourth Proportional to 42,962.81, 64,411.80 and 28,175.45

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Solution

The fourth proportional to 42,962.81, 64,411.80 and 28,175.45 is: 42,241.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,962.81 : 64,411.80 = 28,175.45 : x
  2. Step 2: Convert to fraction form
    42,962.81/64,411.80 = 28,175.45/x
  3. Step 3: Cross multiply
    42,962.81x = 64,411.80 × 28,175.45
  4. Step 4: Simplify right side
    42,962.81x = 1,814,831,128.25
  5. Step 5: Solve for x
    x = 1,814,831,128.25/42,962.81
  6. Step 6: Final answer
    x = 42,241.91

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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.