Home / 91,392.12-137,088.18-38,838.51

Finding the Fourth Proportional to 91,392.12, 137,088.18 and 38,838.51

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Solution

The fourth proportional to 91,392.12, 137,088.18 and 38,838.51 is: 58,257.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,392.12 : 137,088.18 = 38,838.51 : x
  2. Step 2: Convert to fraction form
    91,392.12/137,088.18 = 38,838.51/x
  3. Step 3: Cross multiply
    91,392.12x = 137,088.18 × 38,838.51
  4. Step 4: Simplify right side
    91,392.12x = 5,324,300,649.81
  5. Step 5: Solve for x
    x = 5,324,300,649.81/91,392.12
  6. Step 6: Final answer
    x = 58,257.77

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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.