Home / 78,445.08-108,240.12-46,621.80

Finding the Fourth Proportional to 78,445.08, 108,240.12 and 46,621.80

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Solution

The fourth proportional to 78,445.08, 108,240.12 and 46,621.80 is: 64,329.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,445.08 : 108,240.12 = 46,621.80 : x
  2. Step 2: Convert to fraction form
    78,445.08/108,240.12 = 46,621.80/x
  3. Step 3: Cross multiply
    78,445.08x = 108,240.12 × 46,621.80
  4. Step 4: Simplify right side
    78,445.08x = 5,046,349,226.62
  5. Step 5: Solve for x
    x = 5,046,349,226.62/78,445.08
  6. Step 6: Final answer
    x = 64,329.71

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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.