Home / 85,587.11-128,330.74-35,607.31

Finding the Fourth Proportional to 85,587.11, 128,330.74 and 35,607.31

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Solution

The fourth proportional to 85,587.11, 128,330.74 and 35,607.31 is: 53,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,587.11 : 128,330.74 = 35,607.31 : x
  2. Step 2: Convert to fraction form
    85,587.11/128,330.74 = 35,607.31/x
  3. Step 3: Cross multiply
    85,587.11x = 128,330.74 × 35,607.31
  4. Step 4: Simplify right side
    85,587.11x = 4,569,512,031.86
  5. Step 5: Solve for x
    x = 4,569,512,031.86/85,587.11
  6. Step 6: Final answer
    x = 53,390.19

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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.