Home / 90,724.64-136,056.72-38,124.32

Finding the Fourth Proportional to 90,724.64, 136,056.72 and 38,124.32

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Solution

The fourth proportional to 90,724.64, 136,056.72 and 38,124.32 is: 57,173.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724.64 : 136,056.72 = 38,124.32 : x
  2. Step 2: Convert to fraction form
    90,724.64/136,056.72 = 38,124.32/x
  3. Step 3: Cross multiply
    90,724.64x = 136,056.72 × 38,124.32
  4. Step 4: Simplify right side
    90,724.64x = 5,187,069,931.43
  5. Step 5: Solve for x
    x = 5,187,069,931.43/90,724.64
  6. Step 6: Final answer
    x = 57,173.77

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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.