Home / 85,871.24-118,508.40-47,643.32

Finding the Fourth Proportional to 85,871.24, 118,508.40 and 47,643.32

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Solution

The fourth proportional to 85,871.24, 118,508.40 and 47,643.32 is: 65,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,871.24 : 118,508.40 = 47,643.32 : x
  2. Step 2: Convert to fraction form
    85,871.24/118,508.40 = 47,643.32/x
  3. Step 3: Cross multiply
    85,871.24x = 118,508.40 × 47,643.32
  4. Step 4: Simplify right side
    85,871.24x = 5,646,133,623.89
  5. Step 5: Solve for x
    x = 5,646,133,623.89/85,871.24
  6. Step 6: Final answer
    x = 65,751.16

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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.