Home / 76,620.04-105,802.14-56,511.80

Finding the Fourth Proportional to 76,620.04, 105,802.14 and 56,511.80

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Solution

The fourth proportional to 76,620.04, 105,802.14 and 56,511.80 is: 78,035.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,620.04 : 105,802.14 = 56,511.80 : x
  2. Step 2: Convert to fraction form
    76,620.04/105,802.14 = 56,511.80/x
  3. Step 3: Cross multiply
    76,620.04x = 105,802.14 × 56,511.80
  4. Step 4: Simplify right side
    76,620.04x = 5,979,069,375.25
  5. Step 5: Solve for x
    x = 5,979,069,375.25/76,620.04
  6. Step 6: Final answer
    x = 78,035.32

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1.5x scale

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.