Home / 90,417.27-135,669.63-55,337.79

Finding the Fourth Proportional to 90,417.27, 135,669.63 and 55,337.79

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Solution

The fourth proportional to 90,417.27, 135,669.63 and 55,337.79 is: 83,033.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,417.27 : 135,669.63 = 55,337.79 : x
  2. Step 2: Convert to fraction form
    90,417.27/135,669.63 = 55,337.79/x
  3. Step 3: Cross multiply
    90,417.27x = 135,669.63 × 55,337.79
  4. Step 4: Simplify right side
    90,417.27x = 7,507,657,494.32
  5. Step 5: Solve for x
    x = 7,507,657,494.32/90,417.27
  6. Step 6: Final answer
    x = 83,033.45

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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.