Home / 85,400.48-128,031.49-35,517.89

Finding the Fourth Proportional to 85,400.48, 128,031.49 and 35,517.89

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Solution

The fourth proportional to 85,400.48, 128,031.49 and 35,517.89 is: 53,248.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,400.48 : 128,031.49 = 35,517.89 : x
  2. Step 2: Convert to fraction form
    85,400.48/128,031.49 = 35,517.89/x
  3. Step 3: Cross multiply
    85,400.48x = 128,031.49 × 35,517.89
  4. Step 4: Simplify right side
    85,400.48x = 4,547,408,543.04
  5. Step 5: Solve for x
    x = 4,547,408,543.04/85,400.48
  6. Step 6: Final answer
    x = 53,248.05

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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.