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Finding the Fourth Proportional to 90,699.40, 135,935.70 and 46,343.80

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Solution

The fourth proportional to 90,699.40, 135,935.70 and 46,343.80 is: 69,457.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699.40 : 135,935.70 = 46,343.80 : x
  2. Step 2: Convert to fraction form
    90,699.40/135,935.70 = 46,343.80/x
  3. Step 3: Cross multiply
    90,699.40x = 135,935.70 × 46,343.80
  4. Step 4: Simplify right side
    90,699.40x = 6,299,776,893.66
  5. Step 5: Solve for x
    x = 6,299,776,893.66/90,699.40
  6. Step 6: Final answer
    x = 69,457.76

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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.