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Finding the Fourth Proportional to 84,287.79, 116,320.50 and 48,477.78

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Solution

The fourth proportional to 84,287.79, 116,320.50 and 48,477.78 is: 66,901.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,287.79 : 116,320.50 = 48,477.78 : x
  2. Step 2: Convert to fraction form
    84,287.79/116,320.50 = 48,477.78/x
  3. Step 3: Cross multiply
    84,287.79x = 116,320.50 × 48,477.78
  4. Step 4: Simplify right side
    84,287.79x = 5,638,959,608.49
  5. Step 5: Solve for x
    x = 5,638,959,608.49/84,287.79
  6. Step 6: Final answer
    x = 66,901.26

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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.