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Finding the Fourth Proportional to 38,881.19, 53,681.87 and 29,912.87

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Solution

The fourth proportional to 38,881.19, 53,681.87 and 29,912.87 is: 41,299.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,881.19 : 53,681.87 = 29,912.87 : x
  2. Step 2: Convert to fraction form
    38,881.19/53,681.87 = 29,912.87/x
  3. Step 3: Cross multiply
    38,881.19x = 53,681.87 × 29,912.87
  4. Step 4: Simplify right side
    38,881.19x = 1,605,778,798.67
  5. Step 5: Solve for x
    x = 1,605,778,798.67/38,881.19
  6. Step 6: Final answer
    x = 41,299.63

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1.5x scale

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.