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Finding the Fourth Proportional to 91,330, 137,036.04 and 58,041.43

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Solution

The fourth proportional to 91,330, 137,036.04 and 58,041.43 is: 87,088.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,330 : 137,036.04 = 58,041.43 : x
  2. Step 2: Convert to fraction form
    91,330/137,036.04 = 58,041.43/x
  3. Step 3: Cross multiply
    91,330x = 137,036.04 × 58,041.43
  4. Step 4: Simplify right side
    91,330x = 7,953,767,723.14
  5. Step 5: Solve for x
    x = 7,953,767,723.14/91,330
  6. Step 6: Final answer
    x = 87,088.23

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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.