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Finding the Fourth Proportional to 61,608.32, 84,981.12 and 36,440

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Solution

The fourth proportional to 61,608.32, 84,981.12 and 36,440 is: 50,264.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,608.32 : 84,981.12 = 36,440 : x
  2. Step 2: Convert to fraction form
    61,608.32/84,981.12 = 36,440/x
  3. Step 3: Cross multiply
    61,608.32x = 84,981.12 × 36,440
  4. Step 4: Simplify right side
    61,608.32x = 3,096,712,012.80
  5. Step 5: Solve for x
    x = 3,096,712,012.80/61,608.32
  6. Step 6: Final answer
    x = 50,264.51

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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.