Home / 80,968.48-121,498.80-64,656.16

Finding the Fourth Proportional to 80,968.48, 121,498.80 and 64,656.16

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Solution

The fourth proportional to 80,968.48, 121,498.80 and 64,656.16 is: 97,021.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,968.48 : 121,498.80 = 64,656.16 : x
  2. Step 2: Convert to fraction form
    80,968.48/121,498.80 = 64,656.16/x
  3. Step 3: Cross multiply
    80,968.48x = 121,498.80 × 64,656.16
  4. Step 4: Simplify right side
    80,968.48x = 7,855,645,852.61
  5. Step 5: Solve for x
    x = 7,855,645,852.61/80,968.48
  6. Step 6: Final answer
    x = 97,021.04

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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.