Home / 85,817.55-128,726.33-57,823.95

Finding the Fourth Proportional to 85,817.55, 128,726.33 and 57,823.95

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Solution

The fourth proportional to 85,817.55, 128,726.33 and 57,823.95 is: 86,735.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,817.55 : 128,726.33 = 57,823.95 : x
  2. Step 2: Convert to fraction form
    85,817.55/128,726.33 = 57,823.95/x
  3. Step 3: Cross multiply
    85,817.55x = 128,726.33 × 57,823.95
  4. Step 4: Simplify right side
    85,817.55x = 7,443,464,580.48
  5. Step 5: Solve for x
    x = 7,443,464,580.48/85,817.55
  6. Step 6: Final answer
    x = 86,735.93

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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.