Home / 78,621.04-108,495.48-42,811.48

Finding the Fourth Proportional to 78,621.04, 108,495.48 and 42,811.48

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Solution

The fourth proportional to 78,621.04, 108,495.48 and 42,811.48 is: 59,079.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,621.04 : 108,495.48 = 42,811.48 : x
  2. Step 2: Convert to fraction form
    78,621.04/108,495.48 = 42,811.48/x
  3. Step 3: Cross multiply
    78,621.04x = 108,495.48 × 42,811.48
  4. Step 4: Simplify right side
    78,621.04x = 4,644,852,072.11
  5. Step 5: Solve for x
    x = 4,644,852,072.11/78,621.04
  6. Step 6: Final answer
    x = 59,079.00

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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.