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Finding the Fourth Proportional to 62,938.08, 86,868 and 42,828.48

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Solution

The fourth proportional to 62,938.08, 86,868 and 42,828.48 is: 59,112.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,938.08 : 86,868 = 42,828.48 : x
  2. Step 2: Convert to fraction form
    62,938.08/86,868 = 42,828.48/x
  3. Step 3: Cross multiply
    62,938.08x = 86,868 × 42,828.48
  4. Step 4: Simplify right side
    62,938.08x = 3,720,424,400.64
  5. Step 5: Solve for x
    x = 3,720,424,400.64/62,938.08
  6. Step 6: Final answer
    x = 59,112.45

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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.