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Finding the Fourth Proportional to 74,283.52, 102,510.66 and 40,291.69

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Solution

The fourth proportional to 74,283.52, 102,510.66 and 40,291.69 is: 55,602.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,283.52 : 102,510.66 = 40,291.69 : x
  2. Step 2: Convert to fraction form
    74,283.52/102,510.66 = 40,291.69/x
  3. Step 3: Cross multiply
    74,283.52x = 102,510.66 × 40,291.69
  4. Step 4: Simplify right side
    74,283.52x = 4,130,327,734.42
  5. Step 5: Solve for x
    x = 4,130,327,734.42/74,283.52
  6. Step 6: Final answer
    x = 55,602.21

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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.