Home / 78,718.12-118,018.86-47,546.08

Finding the Fourth Proportional to 78,718.12, 118,018.86 and 47,546.08

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Solution

The fourth proportional to 78,718.12, 118,018.86 and 47,546.08 is: 71,283.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,718.12 : 118,018.86 = 47,546.08 : x
  2. Step 2: Convert to fraction form
    78,718.12/118,018.86 = 47,546.08/x
  3. Step 3: Cross multiply
    78,718.12x = 118,018.86 × 47,546.08
  4. Step 4: Simplify right side
    78,718.12x = 5,611,334,159.07
  5. Step 5: Solve for x
    x = 5,611,334,159.07/78,718.12
  6. Step 6: Final answer
    x = 71,283.89

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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.