Home / 85,727.60-128,640-46,283.84

Finding the Fourth Proportional to 85,727.60, 128,640 and 46,283.84

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Solution

The fourth proportional to 85,727.60, 128,640 and 46,283.84 is: 69,452.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,727.60 : 128,640 = 46,283.84 : x
  2. Step 2: Convert to fraction form
    85,727.60/128,640 = 46,283.84/x
  3. Step 3: Cross multiply
    85,727.60x = 128,640 × 46,283.84
  4. Step 4: Simplify right side
    85,727.60x = 5,953,952,534.40
  5. Step 5: Solve for x
    x = 5,953,952,534.40/85,727.60
  6. Step 6: Final answer
    x = 69,452.00

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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.