Home / 85,510.08-128,148.48-52,241.76

Finding the Fourth Proportional to 85,510.08, 128,148.48 and 52,241.76

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Solution

The fourth proportional to 85,510.08, 128,148.48 and 52,241.76 is: 78,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,510.08 : 128,148.48 = 52,241.76 : x
  2. Step 2: Convert to fraction form
    85,510.08/128,148.48 = 52,241.76/x
  3. Step 3: Cross multiply
    85,510.08x = 128,148.48 × 52,241.76
  4. Step 4: Simplify right side
    85,510.08x = 6,694,702,136.52
  5. Step 5: Solve for x
    x = 6,694,702,136.52/85,510.08
  6. Step 6: Final answer
    x = 78,291.38

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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.