Home / 78,322.47-108,141.15-48,148.23

Finding the Fourth Proportional to 78,322.47, 108,141.15 and 48,148.23

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Solution

The fourth proportional to 78,322.47, 108,141.15 and 48,148.23 is: 66,479.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.47 : 108,141.15 = 48,148.23 : x
  2. Step 2: Convert to fraction form
    78,322.47/108,141.15 = 48,148.23/x
  3. Step 3: Cross multiply
    78,322.47x = 108,141.15 × 48,148.23
  4. Step 4: Simplify right side
    78,322.47x = 5,206,804,962.66
  5. Step 5: Solve for x
    x = 5,206,804,962.66/78,322.47
  6. Step 6: Final answer
    x = 66,479.07

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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.