Home / 78,424.08-108,151.44-60,490.68

Finding the Fourth Proportional to 78,424.08, 108,151.44 and 60,490.68

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Solution

The fourth proportional to 78,424.08, 108,151.44 and 60,490.68 is: 83,420.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,424.08 : 108,151.44 = 60,490.68 : x
  2. Step 2: Convert to fraction form
    78,424.08/108,151.44 = 60,490.68/x
  3. Step 3: Cross multiply
    78,424.08x = 108,151.44 × 60,490.68
  4. Step 4: Simplify right side
    78,424.08x = 6,542,154,148.58
  5. Step 5: Solve for x
    x = 6,542,154,148.58/78,424.08
  6. Step 6: Final answer
    x = 83,420.22

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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.