Home / 85,038.18-127,552.14-31,719.66

Finding the Fourth Proportional to 85,038.18, 127,552.14 and 31,719.66

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Solution

The fourth proportional to 85,038.18, 127,552.14 and 31,719.66 is: 47,577.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,038.18 : 127,552.14 = 31,719.66 : x
  2. Step 2: Convert to fraction form
    85,038.18/127,552.14 = 31,719.66/x
  3. Step 3: Cross multiply
    85,038.18x = 127,552.14 × 31,719.66
  4. Step 4: Simplify right side
    85,038.18x = 4,045,910,513.07
  5. Step 5: Solve for x
    x = 4,045,910,513.07/85,038.18
  6. Step 6: Final answer
    x = 47,577.58

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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.