Home / 77,099.95-106,339.23-66,363.10

Finding the Fourth Proportional to 77,099.95, 106,339.23 and 66,363.10

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Solution

The fourth proportional to 77,099.95, 106,339.23 and 66,363.10 is: 91,530.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,099.95 : 106,339.23 = 66,363.10 : x
  2. Step 2: Convert to fraction form
    77,099.95/106,339.23 = 66,363.10/x
  3. Step 3: Cross multiply
    77,099.95x = 106,339.23 × 66,363.10
  4. Step 4: Simplify right side
    77,099.95x = 7,057,000,090.90
  5. Step 5: Solve for x
    x = 7,057,000,090.90/77,099.95
  6. Step 6: Final answer
    x = 91,530.54

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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.