Home / 84,038.70-126,053.58-31,443.78

Finding the Fourth Proportional to 84,038.70, 126,053.58 and 31,443.78

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Solution

The fourth proportional to 84,038.70, 126,053.58 and 31,443.78 is: 47,164.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,038.70 : 126,053.58 = 31,443.78 : x
  2. Step 2: Convert to fraction form
    84,038.70/126,053.58 = 31,443.78/x
  3. Step 3: Cross multiply
    84,038.70x = 126,053.58 × 31,443.78
  4. Step 4: Simplify right side
    84,038.70x = 3,963,601,037.73
  5. Step 5: Solve for x
    x = 3,963,601,037.73/84,038.70
  6. Step 6: Final answer
    x = 47,164.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.