Home / 78,887.23-118,373.90-45,672.17

Finding the Fourth Proportional to 78,887.23, 118,373.90 and 45,672.17

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Solution

The fourth proportional to 78,887.23, 118,373.90 and 45,672.17 is: 68,533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,887.23 : 118,373.90 = 45,672.17 : x
  2. Step 2: Convert to fraction form
    78,887.23/118,373.90 = 45,672.17/x
  3. Step 3: Cross multiply
    78,887.23x = 118,373.90 × 45,672.17
  4. Step 4: Simplify right side
    78,887.23x = 5,406,392,064.13
  5. Step 5: Solve for x
    x = 5,406,392,064.13/78,887.23
  6. Step 6: Final answer
    x = 68,533.17

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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.