Home / 78,848.20-118,272.30-64,851.40

Finding the Fourth Proportional to 78,848.20, 118,272.30 and 64,851.40

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Solution

The fourth proportional to 78,848.20, 118,272.30 and 64,851.40 is: 97,277.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,848.20 : 118,272.30 = 64,851.40 : x
  2. Step 2: Convert to fraction form
    78,848.20/118,272.30 = 64,851.40/x
  3. Step 3: Cross multiply
    78,848.20x = 118,272.30 × 64,851.40
  4. Step 4: Simplify right side
    78,848.20x = 7,670,124,236.22
  5. Step 5: Solve for x
    x = 7,670,124,236.22/78,848.20
  6. Step 6: Final answer
    x = 97,277.10

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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.