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Finding the Fourth Proportional to 85,332.29, 128,055.53 and 35,412.39

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Solution

The fourth proportional to 85,332.29, 128,055.53 and 35,412.39 is: 53,142.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,332.29 : 128,055.53 = 35,412.39 : x
  2. Step 2: Convert to fraction form
    85,332.29/128,055.53 = 35,412.39/x
  3. Step 3: Cross multiply
    85,332.29x = 128,055.53 × 35,412.39
  4. Step 4: Simplify right side
    85,332.29x = 4,534,752,370.02
  5. Step 5: Solve for x
    x = 4,534,752,370.02/85,332.29
  6. Step 6: Final answer
    x = 53,142.28

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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.