Home / 71,970.53-99,319.50-40,141.47

Finding the Fourth Proportional to 71,970.53, 99,319.50 and 40,141.47

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Solution

The fourth proportional to 71,970.53, 99,319.50 and 40,141.47 is: 55,395.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,970.53 : 99,319.50 = 40,141.47 : x
  2. Step 2: Convert to fraction form
    71,970.53/99,319.50 = 40,141.47/x
  3. Step 3: Cross multiply
    71,970.53x = 99,319.50 × 40,141.47
  4. Step 4: Simplify right side
    71,970.53x = 3,986,830,729.67
  5. Step 5: Solve for x
    x = 3,986,830,729.67/71,970.53
  6. Step 6: Final answer
    x = 55,395.33

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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.