Home / 83,430.25-115,142.01-47,625.65

Finding the Fourth Proportional to 83,430.25, 115,142.01 and 47,625.65

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Solution

The fourth proportional to 83,430.25, 115,142.01 and 47,625.65 is: 65,728.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,430.25 : 115,142.01 = 47,625.65 : x
  2. Step 2: Convert to fraction form
    83,430.25/115,142.01 = 47,625.65/x
  3. Step 3: Cross multiply
    83,430.25x = 115,142.01 × 47,625.65
  4. Step 4: Simplify right side
    83,430.25x = 5,483,712,602.11
  5. Step 5: Solve for x
    x = 5,483,712,602.11/83,430.25
  6. Step 6: Final answer
    x = 65,728.11

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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.