Home / 90,376.32-135,474.48-42,908.16

Finding the Fourth Proportional to 90,376.32, 135,474.48 and 42,908.16

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Solution

The fourth proportional to 90,376.32, 135,474.48 and 42,908.16 is: 64,319.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,376.32 : 135,474.48 = 42,908.16 : x
  2. Step 2: Convert to fraction form
    90,376.32/135,474.48 = 42,908.16/x
  3. Step 3: Cross multiply
    90,376.32x = 135,474.48 × 42,908.16
  4. Step 4: Simplify right side
    90,376.32x = 5,812,960,663.76
  5. Step 5: Solve for x
    x = 5,812,960,663.76/90,376.32
  6. Step 6: Final answer
    x = 64,319.51

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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.