Home / 97,939.90-135,155.13-57,111.64

Finding the Fourth Proportional to 97,939.90, 135,155.13 and 57,111.64

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Solution

The fourth proportional to 97,939.90, 135,155.13 and 57,111.64 is: 78,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,939.90 : 135,155.13 = 57,111.64 : x
  2. Step 2: Convert to fraction form
    97,939.90/135,155.13 = 57,111.64/x
  3. Step 3: Cross multiply
    97,939.90x = 135,155.13 × 57,111.64
  4. Step 4: Simplify right side
    97,939.90x = 7,718,931,128.71
  5. Step 5: Solve for x
    x = 7,718,931,128.71/97,939.90
  6. Step 6: Final answer
    x = 78,812.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.