Home / 85,948.47-128,919.86-35,345.75

Finding the Fourth Proportional to 85,948.47, 128,919.86 and 35,345.75

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Solution

The fourth proportional to 85,948.47, 128,919.86 and 35,345.75 is: 53,017.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,948.47 : 128,919.86 = 35,345.75 : x
  2. Step 2: Convert to fraction form
    85,948.47/128,919.86 = 35,345.75/x
  3. Step 3: Cross multiply
    85,948.47x = 128,919.86 × 35,345.75
  4. Step 4: Simplify right side
    85,948.47x = 4,556,768,320.27
  5. Step 5: Solve for x
    x = 4,556,768,320.27/85,948.47
  6. Step 6: Final answer
    x = 53,017.45

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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.