Home / 98,931.28-136,522.18-56,481.52

Finding the Fourth Proportional to 98,931.28, 136,522.18 and 56,481.52

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Solution

The fourth proportional to 98,931.28, 136,522.18 and 56,481.52 is: 77,942.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,931.28 : 136,522.18 = 56,481.52 : x
  2. Step 2: Convert to fraction form
    98,931.28/136,522.18 = 56,481.52/x
  3. Step 3: Cross multiply
    98,931.28x = 136,522.18 × 56,481.52
  4. Step 4: Simplify right side
    98,931.28x = 7,710,980,240.11
  5. Step 5: Solve for x
    x = 7,710,980,240.11/98,931.28
  6. Step 6: Final answer
    x = 77,942.79

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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.