Home / 66,143.98-99,112.29-56,242.54

Finding the Fourth Proportional to 66,143.98, 99,112.29 and 56,242.54

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Solution

The fourth proportional to 66,143.98, 99,112.29 and 56,242.54 is: 84,275.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,143.98 : 99,112.29 = 56,242.54 : x
  2. Step 2: Convert to fraction form
    66,143.98/99,112.29 = 56,242.54/x
  3. Step 3: Cross multiply
    66,143.98x = 99,112.29 × 56,242.54
  4. Step 4: Simplify right side
    66,143.98x = 5,574,326,934.82
  5. Step 5: Solve for x
    x = 5,574,326,934.82/66,143.98
  6. Step 6: Final answer
    x = 84,275.65

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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.