Home / 86,985.16-130,477.74-34,419.40

Finding the Fourth Proportional to 86,985.16, 130,477.74 and 34,419.40

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Solution

The fourth proportional to 86,985.16, 130,477.74 and 34,419.40 is: 51,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.16 : 130,477.74 = 34,419.40 : x
  2. Step 2: Convert to fraction form
    86,985.16/130,477.74 = 34,419.40/x
  3. Step 3: Cross multiply
    86,985.16x = 130,477.74 × 34,419.40
  4. Step 4: Simplify right side
    86,985.16x = 4,490,965,524.16
  5. Step 5: Solve for x
    x = 4,490,965,524.16/86,985.16
  6. Step 6: Final answer
    x = 51,629.10

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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.