Home / 90,312.56-135,552.02-45,971

Finding the Fourth Proportional to 90,312.56, 135,552.02 and 45,971

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Solution

The fourth proportional to 90,312.56, 135,552.02 and 45,971 is: 68,998.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,312.56 : 135,552.02 = 45,971 : x
  2. Step 2: Convert to fraction form
    90,312.56/135,552.02 = 45,971/x
  3. Step 3: Cross multiply
    90,312.56x = 135,552.02 × 45,971
  4. Step 4: Simplify right side
    90,312.56x = 6,231,461,911.42
  5. Step 5: Solve for x
    x = 6,231,461,911.42/90,312.56
  6. Step 6: Final answer
    x = 68,998.84

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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.