Home / 85,619.52-128,429.28-56,223.36

Finding the Fourth Proportional to 85,619.52, 128,429.28 and 56,223.36

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Solution

The fourth proportional to 85,619.52, 128,429.28 and 56,223.36 is: 84,335.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,619.52 : 128,429.28 = 56,223.36 : x
  2. Step 2: Convert to fraction form
    85,619.52/128,429.28 = 56,223.36/x
  3. Step 3: Cross multiply
    85,619.52x = 128,429.28 × 56,223.36
  4. Step 4: Simplify right side
    85,619.52x = 7,220,725,643.98
  5. Step 5: Solve for x
    x = 7,220,725,643.98/85,619.52
  6. Step 6: Final answer
    x = 84,335.04

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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.