Home / 86,877.28-130,290-30,707.02

Finding the Fourth Proportional to 86,877.28, 130,290 and 30,707.02

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Solution

The fourth proportional to 86,877.28, 130,290 and 30,707.02 is: 46,051.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,877.28 : 130,290 = 30,707.02 : x
  2. Step 2: Convert to fraction form
    86,877.28/130,290 = 30,707.02/x
  3. Step 3: Cross multiply
    86,877.28x = 130,290 × 30,707.02
  4. Step 4: Simplify right side
    86,877.28x = 4,000,817,635.80
  5. Step 5: Solve for x
    x = 4,000,817,635.80/86,877.28
  6. Step 6: Final answer
    x = 46,051.37

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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.