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Finding the Fourth Proportional to 90,319.68, 135,457.64 and 37,700.64

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Solution

The fourth proportional to 90,319.68, 135,457.64 and 37,700.64 is: 56,541.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,319.68 : 135,457.64 = 37,700.64 : x
  2. Step 2: Convert to fraction form
    90,319.68/135,457.64 = 37,700.64/x
  3. Step 3: Cross multiply
    90,319.68x = 135,457.64 × 37,700.64
  4. Step 4: Simplify right side
    90,319.68x = 5,106,839,720.89
  5. Step 5: Solve for x
    x = 5,106,839,720.89/90,319.68
  6. Step 6: Final answer
    x = 56,541.83

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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.