Home / 78,543.39-108,386.67-42,733.44

Finding the Fourth Proportional to 78,543.39, 108,386.67 and 42,733.44

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Solution

The fourth proportional to 78,543.39, 108,386.67 and 42,733.44 is: 58,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,543.39 : 108,386.67 = 42,733.44 : x
  2. Step 2: Convert to fraction form
    78,543.39/108,386.67 = 42,733.44/x
  3. Step 3: Cross multiply
    78,543.39x = 108,386.67 × 42,733.44
  4. Step 4: Simplify right side
    78,543.39x = 4,631,735,259.24
  5. Step 5: Solve for x
    x = 4,631,735,259.24/78,543.39
  6. Step 6: Final answer
    x = 58,970.40

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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.