Home / 85,572.08-128,330.81-29,398.64

Finding the Fourth Proportional to 85,572.08, 128,330.81 and 29,398.64

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Solution

The fourth proportional to 85,572.08, 128,330.81 and 29,398.64 is: 44,088.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,572.08 : 128,330.81 = 29,398.64 : x
  2. Step 2: Convert to fraction form
    85,572.08/128,330.81 = 29,398.64/x
  3. Step 3: Cross multiply
    85,572.08x = 128,330.81 × 29,398.64
  4. Step 4: Simplify right side
    85,572.08x = 3,772,751,284.10
  5. Step 5: Solve for x
    x = 3,772,751,284.10/85,572.08
  6. Step 6: Final answer
    x = 44,088.58

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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.