Home / 78,228.99-117,372.65-43,159.23

Finding the Fourth Proportional to 78,228.99, 117,372.65 and 43,159.23

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Solution

The fourth proportional to 78,228.99, 117,372.65 and 43,159.23 is: 64,754.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,228.99 : 117,372.65 = 43,159.23 : x
  2. Step 2: Convert to fraction form
    78,228.99/117,372.65 = 43,159.23/x
  3. Step 3: Cross multiply
    78,228.99x = 117,372.65 × 43,159.23
  4. Step 4: Simplify right side
    78,228.99x = 5,065,712,981.26
  5. Step 5: Solve for x
    x = 5,065,712,981.26/78,228.99
  6. Step 6: Final answer
    x = 64,754.93

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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.