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Finding the Fourth Proportional to 86,913.70, 130,345.44 and 39,502.38

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Solution

The fourth proportional to 86,913.70, 130,345.44 and 39,502.38 is: 59,242.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,913.70 : 130,345.44 = 39,502.38 : x
  2. Step 2: Convert to fraction form
    86,913.70/130,345.44 = 39,502.38/x
  3. Step 3: Cross multiply
    86,913.70x = 130,345.44 × 39,502.38
  4. Step 4: Simplify right side
    86,913.70x = 5,148,955,102.15
  5. Step 5: Solve for x
    x = 5,148,955,102.15/86,913.70
  6. Step 6: Final answer
    x = 59,242.16

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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.