Home / 98,972.88-136,567.68-56,522.40

Finding the Fourth Proportional to 98,972.88, 136,567.68 and 56,522.40

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Solution

The fourth proportional to 98,972.88, 136,567.68 and 56,522.40 is: 77,992.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,972.88 : 136,567.68 = 56,522.40 : x
  2. Step 2: Convert to fraction form
    98,972.88/136,567.68 = 56,522.40/x
  3. Step 3: Cross multiply
    98,972.88x = 136,567.68 × 56,522.40
  4. Step 4: Simplify right side
    98,972.88x = 7,719,133,036.03
  5. Step 5: Solve for x
    x = 7,719,133,036.03/98,972.88
  6. Step 6: Final answer
    x = 77,992.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.