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Finding the Fourth Proportional to 62,275.71, 85,918.02 and 47,939.93

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Solution

The fourth proportional to 62,275.71, 85,918.02 and 47,939.93 is: 66,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,275.71 : 85,918.02 = 47,939.93 : x
  2. Step 2: Convert to fraction form
    62,275.71/85,918.02 = 47,939.93/x
  3. Step 3: Cross multiply
    62,275.71x = 85,918.02 × 47,939.93
  4. Step 4: Simplify right side
    62,275.71x = 4,118,903,434.95
  5. Step 5: Solve for x
    x = 4,118,903,434.95/62,275.71
  6. Step 6: Final answer
    x = 66,139.81

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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.