Home / 85,315.96-117,715.98-51,775.48

Finding the Fourth Proportional to 85,315.96, 117,715.98 and 51,775.48

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Solution

The fourth proportional to 85,315.96, 117,715.98 and 51,775.48 is: 71,438.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,315.96 : 117,715.98 = 51,775.48 : x
  2. Step 2: Convert to fraction form
    85,315.96/117,715.98 = 51,775.48/x
  3. Step 3: Cross multiply
    85,315.96x = 117,715.98 × 51,775.48
  4. Step 4: Simplify right side
    85,315.96x = 6,094,801,368.17
  5. Step 5: Solve for x
    x = 6,094,801,368.17/85,315.96
  6. Step 6: Final answer
    x = 71,438.00

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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.