Home / 78,295.19-108,047.24-42,485.21

Finding the Fourth Proportional to 78,295.19, 108,047.24 and 42,485.21

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Solution

The fourth proportional to 78,295.19, 108,047.24 and 42,485.21 is: 58,629.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,295.19 : 108,047.24 = 42,485.21 : x
  2. Step 2: Convert to fraction form
    78,295.19/108,047.24 = 42,485.21/x
  3. Step 3: Cross multiply
    78,295.19x = 108,047.24 × 42,485.21
  4. Step 4: Simplify right side
    78,295.19x = 4,590,409,468.89
  5. Step 5: Solve for x
    x = 4,590,409,468.89/78,295.19
  6. Step 6: Final answer
    x = 58,629.52

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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.