Home / 78,663.24-118,011.95-28,743.26

Finding the Fourth Proportional to 78,663.24, 118,011.95 and 28,743.26

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Solution

The fourth proportional to 78,663.24, 118,011.95 and 28,743.26 is: 43,121.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,663.24 : 118,011.95 = 28,743.26 : x
  2. Step 2: Convert to fraction form
    78,663.24/118,011.95 = 28,743.26/x
  3. Step 3: Cross multiply
    78,663.24x = 118,011.95 × 28,743.26
  4. Step 4: Simplify right side
    78,663.24x = 3,392,047,428.18
  5. Step 5: Solve for x
    x = 3,392,047,428.18/78,663.24
  6. Step 6: Final answer
    x = 43,121.13

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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.