Home / 97,688.90-146,531.76-31,128.13

Finding the Fourth Proportional to 97,688.90, 146,531.76 and 31,128.13

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Solution

The fourth proportional to 97,688.90, 146,531.76 and 31,128.13 is: 46,691.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,688.90 : 146,531.76 = 31,128.13 : x
  2. Step 2: Convert to fraction form
    97,688.90/146,531.76 = 31,128.13/x
  3. Step 3: Cross multiply
    97,688.90x = 146,531.76 × 31,128.13
  4. Step 4: Simplify right side
    97,688.90x = 4,561,259,674.41
  5. Step 5: Solve for x
    x = 4,561,259,674.41/97,688.90
  6. Step 6: Final answer
    x = 46,691.69

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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.