Home / 85,827.47-128,741.30-35,880.23

Finding the Fourth Proportional to 85,827.47, 128,741.30 and 35,880.23

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Solution

The fourth proportional to 85,827.47, 128,741.30 and 35,880.23 is: 53,820.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,827.47 : 128,741.30 = 35,880.23 : x
  2. Step 2: Convert to fraction form
    85,827.47/128,741.30 = 35,880.23/x
  3. Step 3: Cross multiply
    85,827.47x = 128,741.30 × 35,880.23
  4. Step 4: Simplify right side
    85,827.47x = 4,619,267,731.50
  5. Step 5: Solve for x
    x = 4,619,267,731.50/85,827.47
  6. Step 6: Final answer
    x = 53,820.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.