Home / 90,342.81-135,638.35-45,999.36

Finding the Fourth Proportional to 90,342.81, 135,638.35 and 45,999.36

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Solution

The fourth proportional to 90,342.81, 135,638.35 and 45,999.36 is: 69,062.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,342.81 : 135,638.35 = 45,999.36 : x
  2. Step 2: Convert to fraction form
    90,342.81/135,638.35 = 45,999.36/x
  3. Step 3: Cross multiply
    90,342.81x = 135,638.35 × 45,999.36
  4. Step 4: Simplify right side
    90,342.81x = 6,239,277,176.46
  5. Step 5: Solve for x
    x = 6,239,277,176.46/90,342.81
  6. Step 6: Final answer
    x = 69,062.24

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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.