Home / 85,460.02-128,179.95-53,776.60

Finding the Fourth Proportional to 85,460.02, 128,179.95 and 53,776.60

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Solution

The fourth proportional to 85,460.02, 128,179.95 and 53,776.60 is: 80,658.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,460.02 : 128,179.95 = 53,776.60 : x
  2. Step 2: Convert to fraction form
    85,460.02/128,179.95 = 53,776.60/x
  3. Step 3: Cross multiply
    85,460.02x = 128,179.95 × 53,776.60
  4. Step 4: Simplify right side
    85,460.02x = 6,893,081,899.17
  5. Step 5: Solve for x
    x = 6,893,081,899.17/85,460.02
  6. Step 6: Final answer
    x = 80,658.56

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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.