Home / 81,472.10-112,459.01-51,307.88

Finding the Fourth Proportional to 81,472.10, 112,459.01 and 51,307.88

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Solution

The fourth proportional to 81,472.10, 112,459.01 and 51,307.88 is: 70,822.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,472.10 : 112,459.01 = 51,307.88 : x
  2. Step 2: Convert to fraction form
    81,472.10/112,459.01 = 51,307.88/x
  3. Step 3: Cross multiply
    81,472.10x = 112,459.01 × 51,307.88
  4. Step 4: Simplify right side
    81,472.10x = 5,770,032,571.16
  5. Step 5: Solve for x
    x = 5,770,032,571.16/81,472.10
  6. Step 6: Final answer
    x = 70,822.19

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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.