Home / 78,887.08-108,866.46-47,055.16

Finding the Fourth Proportional to 78,887.08, 108,866.46 and 47,055.16

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Solution

The fourth proportional to 78,887.08, 108,866.46 and 47,055.16 is: 64,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,887.08 : 108,866.46 = 47,055.16 : x
  2. Step 2: Convert to fraction form
    78,887.08/108,866.46 = 47,055.16/x
  3. Step 3: Cross multiply
    78,887.08x = 108,866.46 × 47,055.16
  4. Step 4: Simplify right side
    78,887.08x = 5,122,728,693.93
  5. Step 5: Solve for x
    x = 5,122,728,693.93/78,887.08
  6. Step 6: Final answer
    x = 64,937.49

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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.