Home / 90,731.04-136,089.12-57,353.76

Finding the Fourth Proportional to 90,731.04, 136,089.12 and 57,353.76

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Solution

The fourth proportional to 90,731.04, 136,089.12 and 57,353.76 is: 86,025.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731.04 : 136,089.12 = 57,353.76 : x
  2. Step 2: Convert to fraction form
    90,731.04/136,089.12 = 57,353.76/x
  3. Step 3: Cross multiply
    90,731.04x = 136,089.12 × 57,353.76
  4. Step 4: Simplify right side
    90,731.04x = 7,805,222,727.09
  5. Step 5: Solve for x
    x = 7,805,222,727.09/90,731.04
  6. Step 6: Final answer
    x = 86,025.94

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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.