Home / 85,955.42-128,939.16-35,985.08

Finding the Fourth Proportional to 85,955.42, 128,939.16 and 35,985.08

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Solution

The fourth proportional to 85,955.42, 128,939.16 and 35,985.08 is: 53,980.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,955.42 : 128,939.16 = 35,985.08 : x
  2. Step 2: Convert to fraction form
    85,955.42/128,939.16 = 35,985.08/x
  3. Step 3: Cross multiply
    85,955.42x = 128,939.16 × 35,985.08
  4. Step 4: Simplify right side
    85,955.42x = 4,639,885,987.73
  5. Step 5: Solve for x
    x = 4,639,885,987.73/85,955.42
  6. Step 6: Final answer
    x = 53,980.14

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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.