Home / 90,723.48-136,038.60-40,760.76

Finding the Fourth Proportional to 90,723.48, 136,038.60 and 40,760.76

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Solution

The fourth proportional to 90,723.48, 136,038.60 and 40,760.76 is: 61,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,723.48 : 136,038.60 = 40,760.76 : x
  2. Step 2: Convert to fraction form
    90,723.48/136,038.60 = 40,760.76/x
  3. Step 3: Cross multiply
    90,723.48x = 136,038.60 × 40,760.76
  4. Step 4: Simplify right side
    90,723.48x = 5,545,036,725.34
  5. Step 5: Solve for x
    x = 5,545,036,725.34/90,723.48
  6. Step 6: Final answer
    x = 61,120.19

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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.