Home / 42,117.36-63,153.96-21,034.80

Finding the Fourth Proportional to 42,117.36, 63,153.96 and 21,034.80

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Solution

The fourth proportional to 42,117.36, 63,153.96 and 21,034.80 is: 31,541.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,117.36 : 63,153.96 = 21,034.80 : x
  2. Step 2: Convert to fraction form
    42,117.36/63,153.96 = 21,034.80/x
  3. Step 3: Cross multiply
    42,117.36x = 63,153.96 × 21,034.80
  4. Step 4: Simplify right side
    42,117.36x = 1,328,430,917.81
  5. Step 5: Solve for x
    x = 1,328,430,917.81/42,117.36
  6. Step 6: Final answer
    x = 31,541.17

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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.